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US-3873996-A
Articulated head and neck protector apparatus
United States Patent Varteressian Apr. 1, 1975 1 1 ARTICULATED HEAD AND NECK PROTECTOR APPARATUS [76] Inventor: Levon Antoine Varteressian, 9018 Timberside Dr., Houston, Tex. 77025 [22] Filed: July 5, 1974 21 Appl. No.: 486,139 [52] US. Cl 2/3 R [51] Int. Cl A42b l/08 [58] Field of Search 2/2, 3 R [56] References...
US-3873997-A
Cervix guard for protective headgear
1451 Apr. 1, 1975 FOREIGN PATENTS OR APPLICATIONS 1,931.011 1/1970 Germany................................. 2/3 R Primary Examiner-Werner H. Schroeder Attorney, Agent, or FirmOlsen and Stephenson 57 ABSTRACT An improved cervix or nape guard for protective headgear of the hockey type and also for industrial helmets, whe...
US-3873998-A
Body armor system
United States Patent [1 1 Norris et a1. [ Apr. 1,1975 1 1 BODY ARMOR SYSTEM [75] Inventors: Lonnie H. Norris, Milford; Philip E. Durand, Hudson, both of Mass. [73] Assignee: The United States of America as represented by the Secretary of the Army, Washington, DC. 22 Filed: Mar. 26, 1974 211 Appl. No.: 4...
US-3873999-A
Undershirts and similar sleeveless garments
United States Patent [1 1 1 ,873,999 Artzt Apr. 1, 1975 UNDERSHIRTS AND SIMILAR SLEEVELESS [57] ABSTRACT GARMENTS William Walter Artzt, 333 Sunset Ave., Palm Beach, Fla. 33480 Filed: Oct. 25, 1973 Appl. No.: 409,741 Inventor: US. Cl. 2/113 Int. Cl .l A41b 9/06 Field of Search.... 2/113, 111, 243, 92, DIG. 4; ...
US-3874000-A
Hot water mitt
United States Patent 1 91 1 11 3,874,000 Altman Apr. 1, 1975 [54] HOT WATER MITT FOREIGN PATENTS OR APPLICATIONS 1 lnvemorl Max Altman, 362 Knowlton Ave, 942,208 4/1956 Germany 2/164 ore, NY. 217 427,865 5/1935 United Kingdom 2/158 22 Filed: Jan. 21, 1974 Primary ExammerGeorge V. Larkm PP 435,256 Attorney, Agent, or...
US-3874001-A
Therapeutic stocking
I Un1ted States Patent 1 1 1111 3,874,001 Patience et a1. Apr. 1, 1975 [5 THERAPEUTIC STOCKING 1.644.185 10/1927 Fischer 2/240 9 9 I 1 1 9 1751 Donald Patience, Barringwn; Roger 11335223 5/1332 111121;??? "621145 3 Swallow, Crystal Lake; Edward 2.903.872 9/1959 Ledwell 112/269 G. Hartigan, Schaumburg ll of 11.; ...
US-3874002-A
Pulsatile magneto-motive artificial heart
United States Patent [191 Kurpanek [451 Apr. 1, 1975 1 PULSATILE MAGNETO-MOTIVE ARTIFICIAL HEART [76] Inventor: Waldemar Helmut Kurpanek, Ontario, Canada [22] Filed: Sept. 7, 1972 [21] Appl. No.: 287,062 [52] US. Cl 3/1, 3/DIG. 2, 128/1 D, 417/50, 417/412, 310/28, 251/65, 137/527 [51] Int. Cl. A6lf 1/24 [58] Fiel...
US-3874003-A
Artificial hip joint
United States Patent 1191 Moser et al. Apr. 1, 1975 1 ARTIFICIAL HIP JOINT 3,102,536 9/1963 Rose et a1. 128/92 CA 3.320.951 5/1967 Wittebol 128/92 CA [751 lnvemorsl Hem Selzach; P" Karl, 3,584,318 6/1971 Scales et a1. 128/92 c Holderbank, both Of swltzerland 3,656,184 4/1972 Chambers 128/92 c 3,685,058 8/1972 T ron...
US-3874004-A
Symes ankle joint
United States Patent May Apr. 1, 1975 i 1 SYMES ANKLE JOINT 975.439 11/1910 Lawrence .1 3/32 l.l02,774 7/l9l4 M t' h k 3 34 [751 Memo" 5:"? kdonald 1.323,444 12/1919 t 333 g an [73] Assignee: J. E. Hanger & Company Limited, FOREIGN PATENTS OR APPLICATONS L d E l d 325,333 9/!920 Germany 4. 3/6 455,64l 2...
US-3874005-A
Child{3 s safety playpen for use in water
1 1 CHILDS SAFETY PLAYPEN FOR USE IN WATER Primary ExaminerTrygve M. Blix Assistant E.\'aminerGalen L. Barefoot [76] Inventor g fi' 23%? g ggi i Attorney, Agent, or FirnzPugh & Laiche Lake Charles, La. 70601 22 F1 d: A l 197 1 3 57 ABSTRACT [21] App]. No.: 387,969 The present invention pertains to a nov...
US-3874006-A
Organic compost collector for sink drain system
United States Patent Ritter [451 Apr. 1, 1975 1 ORGANIC COMPOST COLLECTOR FOR SINK DRAIN SYSTEM [76] Inventor: Ann Lance Ritter, 1001 Balmoral Dr., Nashville, Tenn. 37220 [22] Filed: Mar. 4, 1974 211 Appl. No.: 447,841 [52] US. Cl. 4/189, 4/287 [51] Int. Cl. E03c 1/18, E030 1/26, A47k 1/14 [58] Field Of Search 4/166...
US-3874007-A
Liquid dispensing apparatus and method for toilet flush tank
United States Patent 1191 Dolan 1 Apr. 1, 1975 [54] LIQUID DISPENSING APPARATUS AND 2,913,734 11/1959 OHare 4/227 METHOD FOR TOILET FLUSH 2,967,310 l/l961 OHare 4/227 3,341,074 9/1967 Pannutti 4/227 X [76] Inventor: John E- Dolan, O Orchard 3,698,021 10/1972 Mack et al 4/227 Quarry Height, Harrison, N.Y. 10604 FOREIGN ...
US-3874008-A
Water closet seats and covers therefor
United States Patent 11 1 Warnberg 1451 Apr. 1, 1975 1 1 WATER CLOSET SEATS AND COVERS THEREFOR [76] Inventor: Archie E. Warnberg, 3600 NW. 43rd St., Oklahoma City, Okla. 731 12 22 Filed: Jan. 2, 1974 211 Appl. No.: 430,061 Related U.S. Application Data [63] Continuation-in-part of Ser. No. 97,939, April 15. 1971...
US-3874009-A
Supporting apparatus for an upper bed deck of a mobile home vehicle
United States Patent 1191 Nosaka et al. [ 1 Apr. 1, 1975 SUPPORTING APPARATUS FOR AN UPPER BED DECK OF A MOBILE HOME VEHICLE [75] Inventors: Teizou Nosaka, Chiryu; Tohru Mase, Kariya; Toshitaka Tsukiyama, Toyoda; Keiichi Ohashi; Yasushi Ito, both of Kariya, all of Japan [73] Assignee: Toyota Shatai Kabushiki Kais...
US-3874010-A
Occupant turning device for bed
Geary Apr. 1, 1975 OCCUPANT TURNING DEVICE FOR BED [76] Inventor: William M. Geary, 9347 Crawford Ave., Evergreen Park, 111. 60642 [22] Filed: Mar. l5, 1974 [21] Appl. N0.: 451,434 Related U.S. Application Data [62] Division of Ser. No. 255,427, May 22, 1972, Pat. No. [52] U.S. Cl. 5/61, 5/92 [51] Int. Cl A6lg 7...
US-3874011-A
Children{3 s or infant{3 s furniture
United States Patent Walsh et al. Apr. 1, 1975 vFiled: CHILDREN'S OR INFANTS FURNITURE Inventors: Frederick Bartholomew Walsh, 17 Grange Park Ave., Raheyn, Dublin; Leslie Laurence Grennan, 16 Broad Meadow, Swords, both of Ireland Jan. 12, 1973 Appl. No: 322,994 US. Cl. 5/108, 5/62 Int. Cl. A47d 9/02&#39...
US-3874012-A
Flotation device for a craft
1 1 Apr. 1, 1975 1 1 FLOTATION DEVICE FOR A CRAFT [75] Inventor: Anthony Florio, San Francisco, Calif. [73] Assignee: The Raymond Lee Organization Inc., New York, NY. a part interest [22] Filed: Nov. 29, 1973 [21] Appl. No.: 419,915 [52] US. Cl 9/9, 114/164, 114/54, 244/107 [51] Int. Cl B63b 21/52 [58] Fie...
US-3874013-A
Buoy device for locating and retrieving sunken vessels
United States Patent [1 1 Hudson 1 Apr. 1, 1975 1 1 BUOY DEVICE FOR LOCATING AND RETRIEVING SUNKEN VESSELS Gerald E. Hudson, 815 S. 136th, Seattle, Wash. 98168 [22} Filed: Jan. 21, 1974 1211 Appl. No.: 435,275 [76] lnventor: Primary E.rumim'rTrygve M. Blix Asxislunl Examiner-Jesus D. Sotelo AIIUIIIU), Agent. ...
US-3874014-A
Swimming gloves
United States Patent 1191 Davey Apr. 1,1975 [76] Inventor: i 1 SWIMMING GLOVES Joseph A. Davey, 250 Beach 134th St., Rockaway Park, NY. 11694 [22] Filed: Feb. 6. 1974 [21] Appl. No.: 439,915 [52] U.S. Cl. 9/308 [51] Int. Cl A63b 31/02 [58] Field of Search 9/308, 307. 30] [56] References Cited UNITED STATES ...
US-3874015-A
Rocker platform edge binder
United States Patent 1 1 1111 3,874,015 Decoulos et al. Apr. 1, 1975 OC PLATFORM EDGE BINDER Primary E.\'aminerl atrick D. Lawson [75] Inventors: John J. Decoulos, Peabody; Eugene Attorney Agent Altman Oates & E. Simpson, Lynn, both of Mass. Bell) [73] Assignee: Boston Machine Works Co., Lynn, Mass. [5...
US-3874016-A
Sweeper
United States Patent [11] 3, Liebscher Apr. 1, 1975 1 SWEEPER 3,748,679 7/1973 Rosendall 15/42 inventor: Johannes Liebscher, Nassau, Lahn 3,750,215 8/1973 Llebscher 1 5/42 Germany Primary Examiner-Edward L. Roberts [73] Asslgnee: f f lntematlonal Gunter Attorney, Agent, or Firm -Michael S. Striker Lelfhelt KG, Wuppe...
US-3874017-A
Rotary brush assembly
United States Patent 1 1 1111 3,874,017 Parker Apr. 1, 1975 I ROTARY BRUSH ASSEMBLY 3,564,637 2/1971 GOlllSlL, 15/182 1. [75] Inventor: Russell H. R. Parker, Cleveland, 3683444 8/1972 Schaefer et a 5/183 Ohio FOREIGN PATENTS OR APPLICATIONS Assignee: Superior Brush Australia: Cleveland Ohio 1,036,953 7/1966 Unlted K...
US-3874018-A
Windshield wiper construction
United States Patent 1 1111 3,874,018 van den Berg et al. Apr. 1,1975 [54] WINDSHIELD WIPER CONSTRUCTION 3,082,463 3/1963 BOCk et al 15/250.32 [75] n entors: Johan H. van den Berg, Hasselt; 3,405,419 10/1968 Charlton 15/250.32 Hoebrechts, Mechelen FOREIGN PATENTS OR APPLICATIONS g g g Alex' Y 1,576,797 6/196...
US-3874019-A
Windshield wiper adapter
United States Patent 1191 Speth Apr. 1, 1975 WINDSHIELD WIPER ADAPTER 2,605,491 8/1952 Williams /25032 Inventor: Peter J p 239 88th Ave, 2,607,944 8/1952 Turner et al. l5/250.32 X Bellerose, 142 FOREIGN PATENTS OR APPLICATIONS [22] Filed, Sept 7 1973 958,121 5/1964 United Kingdom 15/25035 [2]] Appl. No.: 395,215 Pr...
US-3874020-A
Windshield wiper unit
United States Patent 1 Van Eckelen et al. [ 1 Apr. 1, 1975 WlNDSHlELD WIPER UNIT [75] Inventors: Alex H. A. M. van Eckelen; Johan H. van den Berg, both of Hasselt, [21] Appl. No.: 330,752 [52] U.S. Cl l5/250.42, 15/250.36, 15/250.38 [51] Int. Cl. B608 l/38 [58] Field of Search l5/250.36, 250.32, 250.37, 3,6...
US-3874021-A
Disposable paintbrushes
United States Patent 1 91 [11] 3, Jacobs 1 1 Apr. 1, 1975 15 1 DISPOSABLE PAINTBRUSHES 3.403.070 9/1968 LewisJr. 15/159 R x Inventor: Herbert v. J o s e 3.805.313 4/1974 Keatmg 15/159 R Philadelphian Apt. 181131. 24111 FOREIGN PATENTS OR APPLICATIONS g' gg Phlladelphw, 009.710 2/1935 Germany 15/244 A {22] Filed: Ma...
US-3874022-A
Means for removing ink from a screen and including a cleaning head and accumulator
[451 Apr. 1, 1975 United States Patent [191 Wogoman et al. f o G mh Am W mt R mm F0 M a I mmwh WA m n I. L l vw m mu w U u mn D mud N FP.m 0 M M M N E n ARA e ECE V MSHIm 4 5 5 l [73] Assignee: Wells Electronics, Inc., South Bend, Assistant Examiner-Richard Fisher Ind. Attorney, Agent, or FirmOltsch & Knoblo...
US-3874024-A
Hose coupling arrangement for pneumatically actuated floor care appliances
United States Patent Ford [ 1 Apr. 1, 1975 HOSE COUPLING ARRANGEMENT FOR PNEUMATICALLY ACTUATED FLOOR CARE APPLIANCES [75] Inventor: Roger S. Ford, Memphis, Tenn. [73] Assignee: The Hoover Company. North Canton, Ohio [22] Filed: Sept. 13, 1973 [21] Appl. No.: 397,150 [52] US. Cl 15/339, 285/7, 285/137 R [51] Int....
US-3874025-A
Hinge arrangement for articulated windshield wiper blades
United States Patent Cone Apr. 1, 1975 [541 HINGE ARRANGEMENT FOR 3,659,309 5/1972 Besnard 151250.32 ARTICULATED WINDSHIELD WIPER FOREIGN PATENTS oR APPLICATIONS BLADES 1,920,035 10/1970 Germany l5/250.32 Inventor: Irwin C. Cone, Littleton, Colo. The Gates Rubber Company, Denver, Colo. Filed: June 18, 1973 ...
US-3874026-A
Door guide locking means
United States Patent [1 1 Uphoff 1 Apr. 1,1975 [ DOOR GUIDE LOCKING MEANS [75] Inventor: Billie J. Uphoff, Morton, Ill. [73] Assignee: Morton Buildings, lnc., Morton, 111. [22] Filed: Aug. 30, 1973 [21] Appl. No.: 392,880 [52] US. Cl 16/82, 16/90, 49/449 [51] Int. Cl E05f 5/02 [58] Field of Search 16/82, 90...
US-3874027-A
Shock absorbing bearing assembly
United States Patent Parsons Apr. 1, 1975 SHOCK ABSORBING BEARING ASSEMBLY Primary E.\'aminerPaul R. Gilliam Assistant Examiner-Doris L. Troutman 75 l t h P H f I 1 men or gi arsons West art Attorney, Agent, or Firm-Brumbaugh, Graves, ' Donohue & Raymond [73] Assignee: The Stanley Works, New Britain, ...
US-3874028-A
Bearing for swivel hinges
United States Patent [191 Ernst et al. [ 1 BEARING FOR SWIVEL HlNGES [75] Inventors: Horst Ernst, Eltingshausen; Armin Olschewski, Schweinfurt; Manfred Brandenstein, Aschfeld, all of Germany [73] Assignee: SKF Industrial Trading and Development Company B.V., Amsterdam, Netherlands 22 Filed: July 26,1973 2| Appl....
US-3874029-A
Positive locking hinge
United States Patent 1 1 McCullough I 1451 Apr. 1, 1975 v1. .2] Filed: 1 POSITIVE LOCKING HINGE [76] Inventor: Richard C. McCullough. 1154 Eastwood Ave.. Inglewood. Calif. 90304 Jan. 16. 1974 1211 Appl. No.: 433,687 Primary ExamineF-Paul R. Gilliam Assistant E.\'aminerDoris L. Troutman Almrm'y. Agent. or ...
US-3874030-A
Apparatus for spreading tows of fibrous materials
[ Apr. 1,1975 [ APPARATUS FOR SPREADING TOWS OF FIBROUS MATERIALS Jack B. Knight, Richmond, Va. Philip Morris Incorporated, New York, NY. Filed: Mar. 8, 1973 Appl. No.: 339,167 Inventor: Assignee: US. Cl. 19/65T, 26/63, 242/157 Int. Cl D0ld 11/02 Field of Search 19/65 T, 66 T; 226/108, France 26/63...
US-3874031-A
Apparatus for the manufacture of rolls from batting
United States Patent 1 1 Simon 1 Apr. 1, 1975 1 1 APPARATL'S FOR THE MANUFACTURE OF ROLLS FRO BATTING [75] Inventor: Stefan Simon, Modling/N iederosterreich. Austria [73] Assignee: Carl Hahn GmbH, Dusseldorf, Germany [221 Filed: July 10, 1972 [21] Appl. No.: 270.393 Primary IiruminerDorsey Newton .-1I1urne...
US-3874032-A
Method and apparatus for the manufacture of tampons
O United States Patent 1 [111 3, Simon et al. Apr. 1, 1975 METHOD AND APPARATUS FOR THE [57] ABSTRACT MANUFACTURE OF TAMPONS An improvement in a process for the manufacture of [75] Inventors; St f Si tampons wherein a batting is wound into a plurality of Moedli /Ni d t i h rolls, the rolls are transferred to a press...
US-3874033-A
Trumpet
United States Patent [191 Duncan Apr. 1, 1975 TRUMPET [75] Inventor: Raymond E. Duncan, Union, SC. [73] Assignee: Deering Milliken Research Corporation, Spartanburg, SC. [22] Filed: Nov. 2, 1970 [21] Appl. No.: 85,927 [52] US. Cl. 19/288 [51] Int. Cl D0111 5/72 [58] Field of Search 19/288, 150, 292, 291, [5...
US-3874034-A
Perforated thermoplastic plastic strap closure affixed to an open mouth bag structure
United States Patent 1191 Clayton 1 Apr. 1, 1975 [75] Inventor: William .1. Clayton, Fairport, NY. [73] Assignee: Mobil Oil Corporation, New York, 22 Filed: Feb. 7, 1974 21 Appl. No.: 440,421 Related U.S. Application Data [63] Continuation of Ser. No. 216,411, Jan. 10, 1972, abandoned, Continuation-in-part of...
US-3874035-A
Hanger clip
United States Patent 1191 11.11 3,874,035 Schuplin 1 Apr. 1, 1975 HANGER CLIP 3,463,522 8/1969 Meehan 248/228 x 3,618,176 11/1971 B 24 84B [75] Inventor: .grfi'pme T. Schuplm, Parma Heights, 3,743,228 7/1973 03:1 244/228 [73] Assignee: Fastway Fasteners, lnc., Lorain, ry e G60- V. Larkin Ohi Attorney, Agent, or ...
US-3874036-A
Sliding clasp fasteners
United States Patent 1 [111 3,874,036 Yoshikawa [45] A r, 1, 1975 SLIDING CLASP FASTENERS [56] References Cited [75] Inventor: Kiichi Yoshikawa,Toy0naka, UNITED STATES PATENTS osakaJapan 3,015,868 1/1962 Ruhrmann 24/205.16 C 3,054,158 9/1962 Yoshida 24/2051 C [73] Ass1gnee: Yoshlda Kogyo Kabushiki Kaisha, 3,149,387 ...
US-3874037-A
Pressure sealing slide fastener
United States Patent [191 Takamatsu Apr. 1, 1975 [21] Appl. No: 439,057 [30] Foreign Application Priority Data Feb. 6. 1973 Japan 48-16118 [52] US. Cl 24/205.1 R Int. Cl A44b 19/32 Field of Search 24/205.1 R [56] References Cited UNITED STATES PATENTS 2,7-16 l 13 5/1956 138K127 6/1959 2.909.823 Ill/1959 3.082.501...
US-3874038-A
Sliding clasp coupling elements
United States Patent [191 Takamatsu [451 Apr. 1, 1975 1 SLIDING CLASP COUPLING ELEMENTS [75] Inventor: Ikuo Takamatsu, Uozu, Japan [73] Assignee: Yoshida Kogyo Kabushiki Kaisha, Tokyo, Japan [22] Filed: July 31, 1973 [21] Appl. No.: 384,176 [30] Foreign Application Priority Data Aug. 3, 1972 Japan 47-91399 [52] U...
US-3874039-A
Slide fastener stringer with scoops fabricated of a continuous filament
United States Patent 1 Takamatsu Apr. 1, 1975 [75] Inventor: Ikuo Takamatsu, Oaza Daikaiji Uozu, Japan [73] Assignee: Yoshida Kogyo K.K., Tokyo, Japan [22] Filed: July 26, 1974 211 App]. No.: 492,061 [30] Foreign Application Priority Data Aug. 24, 1973 Japan 48-99845 [52] US. Cl. 24/205.13 C, 24/205.l6 C [51] Int. C...
US-3874040-A
Cam-lock slider
D United States Patent 1 1 1111 3,874,040 Murakami Apr. 1, 1975 1 CAM-LOCK SLIDER 2,539,520 1/1951 Mikulas 24/2o5.14 A 2,968,078 1/1961 Huelster 24/205.l4 A [75] Inventor: Shoets Mumkam" Kumbe Japan 3,068,542 12/1962 Firing 24/205.14 R [73] Assignee: Yoshida Kogyo Kabushiki Kaisha, Tokyo, Japan Primary Exami...
US-3874041-A
Fasteners
United States Patent 1 91 1111 3,874,041 Smith Apr. 1, 1975 1 FASTENERS 2.695.046 11/1954 Tinnerman 51/4175 [75] Famham 3,417,442 12/1968 S m ith ..24/221 A England 3.504.875 4/1970 .lOllllSOll.... 24/221 K 3,600,018 8/1971 Dzus 24/221 A [73] Ass'gnee' 3 5 Fastener West [Shp 3,656,466 4/1972 Dzus 24/221 A [2...
US-3874042-A
Clamp for thin walled tubing
United States Patent [191 Eddleman et al. [111 3,874,042 [451 Apr. 1, 1975 1 1 CLAMP FOR THIN WALLED TUBING [73] Assignee: Biospectrum, Inc., Los Angeles, Calif. 22 Filed: Jan. 22, 1973 21 App1.No.:325,394 [52] US. Cl. 24/255 SL, 128/346, 251/10 [51] Int. Cl Fl6k 7/04, A6lb 17/10 [58] Field of Search 24/67...
US-3874043-A
Apparatus for uncurling the edges of a running web
[ 51 Apr. 1,1975 United States Patent 1191 Holm 26/DIG, l 26/DIG. l 26/DIG l Wmm m.m.m KK add mumm en GUU 833 366 999 NH 8009 952 35 347 633 699 Primary ExaminerRobert R. Mackey [73] Assignee: Attorney, Agent, or Firm-M0rse, Altman, Oates & Bello 22 Filed: Oct. 9, 1973 21 1 Appl. No.: 404,308 [57] ABSTRAC...
US-3874044-A
Apparatus and process for simultaneous crimping and commingling of yarns
United States Patent 11 1 1111 3,874,044 Kwon et al. Apr. 1, 1975 APPARATUS AND PROCESS FOR 3,763,525 10/1973 MacKnight 28/l.3 SIMULTANEOUS CRIMPING AND COMMINGLING OF YARNS Inventors: Young D. Kwon, Morristown; Russell H. Butler, Dover; l-lendrikus J. Oswald, Morristown, all of N.J.; Dong W. Kim, Chester, Va....
US-3874045-A
Simultaneously crimping and commingling yarns
United States Patent [19] Butler et al. [451 Apr. 1, 1975 SIMULTANEOUSLY CRIMPING AND COMMINGLING YARNS [75] Inventors: Russell H. Butler, Dover; l-lendrikus J. Oswald; Young D. Kwon, both of Morristown, all of NJ. [73] Assignee: Allied Chemical Corporation, New York, NY. [22] Filed: Mar. 8, 1974 [21] Appl....
US-3874046-A
Device for singeing threads
United States Patent n91 Aschwanden et al. [ Apr. 1,1975 i 1 DEVICE FOR SINGEING THREADS [75] Inventors: Paul Aschwanden, Arth; Konrad Wick, Goldau, both of Switzerland [73] Assignee: Aktiengesellschaft Fr. Mettlers Sohne Maschinenl'abrik, Arth. Switzerland [22] Filed: Apr. 24. 1973 [2H Appl. No.: 354,081 ...
US-3874047-A
Process to provide narrow yarn width of transfer tails of multifilament yarn
United States Patent Peckinpaugh et al. PROCESS TO PROVIDE NARROW YARN WIDTH OF TRANSFER TAILS OF MULTIFILAMENT YARN Inventors: Frank Lee Peckinpaugh, Colonial Heights; Joseph John Bellemore, Chester, both of Va. Allied Chemical Corporation, Morristown, NJ. Filed: Nov. 21, 1972 Appl. No.1 308,360 Assignee: ...
US-3874048-A
Method and apparatus for fabricating tubing
United States Patent Millar et al. METHOD AND APPARATUS FOR FABRICATING TUBING Inventors: Barry C. Millar, lslington; Keith W. Little, Georgetown, both of Ontario, Canada Assignee: Bundy Corporation, Detroit, Mich. Filed: Dec. 4, 1972 Appl. No.: 311,952 us. 01. 29/33 K, 10/12 T, 10/166, 29/33 P, 29/33 T, 29/20...
US-3874049-A
Method of making a powdered metal part having a bearing surface
United States Patent Ferguson 5] Apr. 1, 1975 54] METHOD OF MAKING A POWDERED 3,445,148 5/1969 Harris et al. 29/1495 PM 3,785,038 1/1974 Zapf 29/4205 METAL PART HAVING A BEARING SURFACE 175] Inventor: Howard A. Ferguson, Coldwater, Mich. [731 Assignee: Russell, Burdsall & Ward, Inc., Greenwich, Conn. [2...
US-3874050-A
Method of making a bearing
United States Patent 1191 White 1111 3,874,050 1451 Apr. 1, 1975 [5 METHOD OF MAKING A BEARING 3,626,566 12/1971 Kilgour 29/1495 B 3,654,683 4 1 72 Wh't 29 149.5 B [76] Inventor: Charles s. White, 35815-42nd $1., I 9 East, Palmdale, Calif. 93550 [22 Filed; AP 4, 1974 Primary Examiner-Thomas l-l. Eager Att A t, ...
US-3874051-A
Method for producing girders
United States Patent n 1 Malik 1 Apr. 1, 1975 METHOD FOR PRODUCING GIRDERS [76] Inventor: Stanislaus Malik. Taeleshahnstrasse 24, 734 Gcislingcn, Germany [22l Filed: Jan. 25, 1974 [2]] Appl No: 436,725 [52] US. Cl 29/155 R. 29/416. 29/463 [5 l] Int. Cl. 823p 17/00, B2ld 39/02 I58] Field of Search 29/!55 R, 155 C. 46...
US-3874052-A
Method of forming and installing pressure responsive diaphragms
United States Patent [191 Schantz [111 3,874,052 Apr. 1, 1975 METHOD OF FORMING AND INSTALLING PRESSURE RESPONSIVE DIAPHRAGMS Primary Evaminer-C. W. Lanham Assistant ExaminerDan C. Crane [76] Inventor: Spencer C. Schantz, 16608 W. H H Roger Dr New Berlin. Wis 53153 AIIOHIL), Agent. or [lH7IAlthUl L. Morsell, Jr. ...
US-3874053-A
Method of manufacturing a radiator
United States Patent 1191 Nederlof 1 11 3,874,053 1 Apr. 1, 1975 [54] METHOD OF MANUFACTURING A RADIATOR [75] Inventor: Anton Marie Nederloi, Emmasingel, Eindhoven, Netherlands [73] Assignee: U.S. Philips Corporation, New York, NY. [22] Filed: Oct. 9, 1973 121] App]. No.: 404,358 [30] Foreign Application Pr...
US-3874054-A
Wheel process
United States Patent [191 Reppert 1 Apr. 1, 1975 1 WHEEL PROCESS [75] Inventor: Merlyn R. Reppert, Torrance, Calif. [73] Assignee: W. R. Grace & Co., New York, [22] Filed: Nov. 29, 1973 [21] Appl. No.: 420,109 [52] U.S. Cl 29/l59.0l, 29/15903, l13/116 D, 301/63 R, 301/64 R [51] Int. Cl ..B21h1/02, B2lk 1/3...
US-3874055-A
Method of making vehicle wheel
Apr. 1, 1975 United States Patent [1 1 Wilcox METHOD OF MAKING VEHICLE WHEEL [76] Inventor: Raymond J. Wilcox, 44 Via Casitas, Pn'mary Lanham San Luis Rey Downs, Calif. 92068 Feb. 22, 1974 Assistant E.\'aminerVictor A. DiPalma Attorney, Agent, or FirmReising, Ethington & Perry 22 Filed: [57] ABSTRACT A w...
US-3874056-A
Stator coil press
United States Patent 1191 Peters Apr. 1, 1975 STATOR COIL PRESS [76] Inventor: Robert W. Peters, 9036 N. 75th St., Milwaukee, Wis. 53233 22 Filed: Sept. 27, 1973' 21 Appl. No.: 401,240 [52] US. Cl 29/205 D [51] Int. Cl. 1102k 15/06, H02k 15/085 [58] Field of Search 29/205 D, 205 R, 203 R, 29/203 D [56] Refere...
US-3874057-A
Slider holder with a self-actuated release mechanism
United States Patent [1 1 Kawakami et al. [ Apr. 1, 1975 SLIDER HOLDER WITH A SELF-ACTUATED RELEASE MECHANISM [75] Inventors: Koichi Kawakami, Kurobe; Tatsuo Osaki, Uozu, both of Japan [73] Assignee: Yoshida Kogyo Kabushiki Kaisha, Tokyo, Japan [22] Filed: Apr. 17, 1974 [21] Appl. No.: 461,630 [30] Foreign App...
US-3874058-A
Closure forming apparatus
Apr. 1, 1975 United States Patent [1 1 Jesevich et al. 29/453 X 29/453 UX 2,325,929 8/1943 Amesbury et al..... 1 1 CLOSURE FORMING APPARATUS 2,662.646 McCain 2,799,971 7/1957 Brudney..... 3 10/1962 Inventors: John Jesevich, Cicero; Vyto Simkus, Eckman Chicago, both of 111. g .m r u t c a M n MN k m e m y ...
US-3874059-A
Rotary engine apex seal and spring injector
United States Patent Kosmanski Apr. 1, 1975 [54] ROTARY ENGINE APEX SEAL AND SPRING 3,367,016 2/1968 Sainz 29/270 INJECTOR FOREIGN PATENTS 0R APPLICATIONS 1 1 nto Thomas J. manski. Troy. Mich. 702.062 3/1931 France 29/269 [73] Assignee: General Motors Corporation, I Den-0i. Mich. Primary Examiner-A1 Lawrence Smith ...
US-3874060-A
Method of fabricating a demountable rod
United States Patent 1191 Barnes 1451 Apr. 1, 1975 1 METHOD OF FABRICATING A DEMOUNTABLE ROD [75] Inventor: Richard D. Barnes, Costa Mesa, 21 Appl. No.: 480,381 [52] US. Cl 29/416, 29/458, 29/525, 43/18 R, 43/18 GF, 264/159, 264/267, 264/295 [51] Int. Cl. B23p 17/00 [58] Field of Search 29/416, 525, 458, 445...
US-3874061-A
Wire inserting device
United States Patent Gauthier 1 Apr. 1, 1975 WIRE INSERTING DEVICE [75] Inventor: Maurice Gauthier, Angouleme, France 221 Filed: May 30,1973 211 App]. No.: 365,326 FOREIGN PATENTS OR APPLICATIONS Canada 29/241 1,111,259 7/1961 Germany 254/1343 FT Primary Examiner-James L. Jones, Jr. Attorney, Agent, or FirmSu...
US-3874062-A
Process for fabricating a columnar assembly of spaced reinforcing bars
United States Patent 11 1 1111 3,874,062 Muto et al. Apr. 1, 1975 1 PROCESS FOR FABRICATING A 1,011,104 12/1911 Bates 29/155 c COLUMNAR ASSEMBLY OF SPACE) 3,296,690 l/1967 Barron.... 52/741 3,376,001 4 1968 Wieme 140 111 REINFORCING BARS 3,407,560 10/1968 Baumann 52/741 [75] Inventors: Kiyoshi Muto, Tokyo; Yasuhisa ...
US-3874063-A
Method of pipe joint sealing
United States Patent 1191 Skinner et a1. 1 1 Apr. 1, 1975 METHOD OF PIPE JOINT SEALING [75] Inventors: Harry W. Skinner, 4609 St. Joe Center Rd., Fort Wayne, 1nd. 46815; Max D. Orn, Scotia, NY. 52 us. c1 29/450, 29/525, 264/274, 277/181, 277/190, 285/189 51 1m. (:1 B23p 11/02 [58] Field of Search 29/450, 423,...
US-3874064-A
Process for securing a rigid coupling to one end of an armored flexible pipe
United States Patent Chevalier Apr. 1, 1975 [5 1 PROCESS FOR SECURING A RIGID 1,086,641 2/1914 Blume 285/149 COUPLING TO ONE END OF AN ARMORED 5 1 a1ser FLEXIBLE PIPE 3.333,325 8/1967 Goward 29/508 [75] Inventor: Andr Chevalier, Pantin, France 3,446,361 /1969 Douty 29/460 X 3,531,143 9/1970 Horvath et al. 285/149 1 1 A...
US-3874065-A
Method of making a stud assembly
United States Patent 1191 Schenk Apr. 1, 1975 [73] Assignee: Drus Fastener Co., Inc., West lslip, [22] Filed: Nov. 5, 1973 [21] Appl. No.: 412,707 [52] US. Cl 29/467, 29/520, 29/526, 24/221 R, 74/543, 85/9 R [51] Int. Cl B23q3/00,B21d39/00,B23p 11/00 [58] Field of Search 29/467, 464, 520, 526', 24/221 R; 7...
US-3874066-A
Preparation of compound wire
O United States Patent 11 1 1111 3,874,066 Lanner 5] Apr. 1, 1975 PREPARATION OF COMPOUND WIRE 3,663,723 5/1972 Persson 156/179 3,777,362 12/1973 Nilsson et al. 29/479 X [75] lnvemor- Lam", Garphytmn 3,820,229 6/1974 Larker et al. 29/4701 73 A AB G h G h FOREIGN PATENTS OR APPLICATIONS s We yuan 2,007,400 9/1970 Fr...
US-3874067-A
Method and apparatus of butt welding pipes or the like
United States Patent Toyooka et al. METHOD AND APPARATUS OF BUTT WELDING PIPES OR THE LIKE Inventors: Terumasa Toyooka; Kiyoshi Terai, both of Hyogo, Japan Assignee: Kawasaki Jukogyo Kabushiki Kaisha, Hyogo, Japan Filed: June 7, 1973 Appl. No.: 367,928 US. Cl 29/470.3, 156/73, 156/304, 156/544, 156/580, 228/2,...
US-3874068-A
Wave soldering electrical connections
1451 Apr. 1, 1975 1 WAVE SOLDERING ELECTRICAL CONNECTIONS [75] Inventor: [73] Assignee: Dynamics Corporation of America, New York, NY. [22] Filed: Mar. 2, 1973 [21] Appl. No.: 337,386 Related US. Application Data Lawrence E. Cook, Meriden, Conn. [60] Division of Ser. No. 219,036, Jan. 19, 1972, Pat. No. ...
US-3874069-A
Method of bonding silicon carbide body to a metal part
United States Patent [191 Ingleby Apr. 1,1975 [ METHOD OF BONDING SILICON CARBIDE BODY TO A METAL PART [75] Inventor: Bryan Edward Ingleby, Preston, England [73] Assignee: United Kingdom Atomic Energy Authority, London, England [22] Filed: Mar. 12, 1974 [21] Appl. N0.: 450,293 [30] Foreign Application Priority...
US-3874070-A
High fatigue squeeze riveting process and apparatus therefor
United States Patent 1 1 Falcioni 1 1 Apr. 1, 1975 1 1 HIGH FATIGUE SQUEEZE RIVETING PROCESS AND APPARATUS THEREFOR [75] Inventor: Joseph George Falcioni, Tacoma, Wash. [73] Assignee: The Boeing Company, Seattle, Wash. 221 Filed: Aug. 3, 1973 211 Appl. No.: 385,450 156] References Cited UNITED STATES PA...
US-3874071-A
Machine tool with automatic tool changing device
I [451 Apr. 1, 1975 MACHINE TOOL WITH AUTOMATIC TOOL CHANGING DEVICE [75] Inventor: Sadamu Kato, Takahama, Japan [73] Assignee: Toyoda Koki Kabushiki Kaisha, Kariya-shi, Aichi-ken, Japan 22 Filed: Feb. 23, 1973 21 Appl. No.: 335,094 [30] Foreign Application Priority Data Feb. 25, 1972 Japan 47-19941 [52] US. Cl. ...
US-3874072-A
Semiconductor structure with bumps and method for making the same
United States Patent Rose et al. [ Apr. 1,1975 [ SEMICONDUCTOR STRUCTURE WITH BUMPS AND METHOD FOR MAKING THE SAME [75] Inventors: Ralph E. Rose, San Jose, Calif; [73] Assignee: Signetics Corporation, Sunnyvale, Calif. [22] Filed: Aug. 27, 1973 [21] App]. N0.: 392,112 Related US. Application Data [62]...
US-3874073-A
Method of manufacturing dynamoelectric machines
United States Patent 11 1 1111 3,874,073 Dochterman et a1. Apr. 1, 1975 [54] METHOD OF MANUFACTURING 3,436,569 4/1969 Flahcrty, Jr. ct a1, 310/43 DYNAMOELECTRIC MACHINES 3,493,531 2/1970 Hofmann ct al 264/272 X 3,685,926 8/1972 Blum Inventors: Richard Dochterman, Fort 1124.909 12/1960 Dochterman 310/43 x Wayne, 1nd.; M...
US-3874074-A
Method of fabricating a stabilized composite superconductor
United States Patent 1 1 Meyer 1 Apr. 1,1975 [ 4] METHOD OF FABRICATING A STABILIZED COMPOSITE SUPERCONDUCTOR [75] Inventor: Gundolf Meyer, Birmenstorf, Switzerland [73] Assignee: BBC Brown Boveri & Company Limited, Baden, Switzerland [22] Filed: May 30, 1973 [21] Appl. No.: 365,148 [30] Foreign Application P...
US-3874075-A
Method for the production of an inductive component element
United States Patent 11 1 1111 3,874,075 Lohse Apr. 1, 1975 METHOD FOR THE PRODUCTION OF AN 3,123,787 3/1964 Shifrin 29/602 x INDUCTIVE COMPONENT ELEMENT 3,293,587 12/1966 Robinson 219/121 L 3,319,207 5/1967 Davis 336/229 Inventor: Hartwlg L9hse, Regensburg, 3,530,573 9/1970 Helgeland 219/121 LM Germany 3,534,472 10/19...
US-3874076-A
Method and apparatus for manufacturing soft metal sheaths for electrical wires
United States Patent Tsukamoto et al. [45] A 1, 1975 [5 METHOD AND APPARATUS FOR 3,356,790 12/1967 POllZZZmO et al. 29/624 ux NU CT SOFT METAL SHEATHS glge 1em FOR ELECTRICAL WIRES 3,693,250 9/1972 Brorein et 61.... 29/2025 x [75] inventors: Akiyoshi Tsukamoto; l-liroyuki 3,7l6,908 2/1973 Rowell 29/477.7 Kumamaru; K...
US-3874077-A
Method and apparatus for centering and shearing the free end portion of a plurality of leads which extend outwardly from one end of a template
United States Patent Folk 1 Apr. 1, 1975 METHOD AND APPARATUS FOR CENTERING AND SHEARING THE FREE END PORTION OF A PLURALITY OF LEADS WHICH EXTEND OUTWARDLY FROM ONE END OF A TEMPLATE [75] Inventor: Kenneth Foster Folk, Harrisburg, [73] Assignee: AMP Incorported, Harrisburg, Pa. [22] Filed: Dec. 12, 1973 [21] App...
US-3874078-A
Can opener with helically mounted blade
United States Patent 1191 1111 3,874,078 Raque Apr. 1, 1975 1 CAN OPENER WITH HELICALLY 1,789,729 1/1931 Coyle 30/4 A MOUNTED BLADE 2,677,881 5/l954 Anderson..... 75 I R b G R L K 3,215,017 11/1965 Rutz 83/696 x l 1 l f FOREIGN PATENTS OR APPLICATIONS [731 Asslgnee FMC Cmpmmn, San Jose Callf- 52,870 9/1910 Switzerland ...
US-3874079-A
Auxiliary trimmer assembly for an electric shaver
United States Patent 1191 Waters et a1. [451 Apr. 1, 1975 [75] Inventors: Robert S. Waters; Donald L. Shortlidge, both of Lancaster, Pa. [73] Assignee: Schick Incorporated, Lancaster, Pa. [22] Filed: June 6, 1974 [2]] Appl. No.: 477,021 3/1957 Germany 30/34.] 2/1960 United Kingdom 30/34.] Primary Exam...
US-3874080-A
Buccal end tube
United States Patent [191 Wallshein [111 3,874,080 [451 Apr. 1,1975 1 1 BUCCAL END TUBE [76] inventor: Melvin Wallshein, 8645 Bay Pky., Brooklyn, NY. 11228 [22] Filed: Mar. 5, 1973 [21] Appl. No.: 337,897 [52] US. Cl 32/14 A [51] Int. Cl. A6lc 7/00 [58] Field of Search 32/14 A [56] References Cited UNITED STAT...
US-3874081-A
Dental pin and dispenser
Unlted States Patent 1 1 1111 3, Franklin et al. Apr. 1, 1975 [54] DENTAL PIN AND DISPENSER 2,472,103 6/[949 Giesen 32/6 2, 4 [76] Inventors: Mark E. Franklin, 29 Koster Dr., 233 $222 I n Freehold, 7 James 3,473,223 /1969 Karlstrom 32/12 SchmIdt, 33 Blrmmgham 3,675,328 7/1972 Weissman 32/15 Englishtown, NJ. 07726 22...
US-3874082-A
Tooth treatment method
United States Patent [191 Stein Apr. 1, 1975 1 TOOTH TREATMENT METHOD [76] inventor: Lewis Stein, 147-34 Village Rd., Jamaica, NY. 11435 [22] Filed: June 4, 1973 [2]] Appl. No.: 366,668 [52] U.S. Cl. 32/15 [51] Int. Cl A6lk 5/02 [58] Field of Search 32/1, 15, 57; 106/6, 35; [56] References Cited UNITED STATES ...
US-3874083-A
Adjustable nozzle dental syringe with pull-back valve
United States Patent Buckley ADJUSTABLE NOZZLE DENTAL SYRINGE WITH PULL-BACK VALVE Apr. 1, 1975 Primary E.\'aminerRobert Peshock Attorney, Agent, or FirmPhillips, Moore, Weissenberger Lempio & Strabala [57] ABSTRACT A dental syringe connectable to sources of air and water under pressure for selectively providin...
US-3874084-A
Prescription tooth-cleansing and gingival therapeutic device
United States Patent Cole [ Apr. 1, 1975 1 PRESCRIPTION TOOTH-CLEANSING AND GINGIVAL THERAPEUTIC DEVICE William Lloyd Cole, Hollywood, Fla. [73] Assignee: Orville N. Greene, New York, NY. ; a part interest 22 Filed: Dec. 6, 1973 21 Appl. No.: 422,179 [75] Inventor: Primary Examiner-Robert Peshock Allorney, ...
US-3874085-A
Pasta gauge
United States Patent 1 1 Atkins [451 Apr. 1, 1975 l l PASTA GAUGE 2 l 1 Appl. No.: 363,274 [52] US. Cl 33/174 T, 33/178 B [5 1] Int. Cl. GOlb 3/34 [58] Field of Search 33/174 T. 174 H, 174 D, 33/178 B, 199 R, 1 F [56] References Cited UNITED STATES PATENTS 1.025.255 5/1912 Driver 33/178 B 2.166.650 7/1939 Town...
US-3874086-A
Layout device
United States Patent [191 Ludlam Apr. 1, 1975 22 Filed: [ 1 LAYOUT DEVICE [76] lnventor: David C. Ludlam, 5828 McMillan Cir., Columbia, SC. 29210 Apr. 29, 1974 [21] Appl. No.: 465,079 Primary E.\'aminerRichard E. Aegerter Assistant Examiner-Willis Little Attorney. Agent, or Firm-Bailey & Dority [57] ABSTR...
US-3874087-A
Surveying instrument
[ 1 Apr. 1, 1975 United States Patent 1 Nunlist 2,998.653 9/1961 Haglund............................ 33/275 R 20 ll 7 197 P' 3 267 Rene Nunlist, Aarau, Switzerland 3 5 6 0 mm 3/ Kern & C0. AG, Aarau, Switzerland Primary E.\'aminerHarry N. l-laroian Assistant Examiner-Richard R. Stearns Attorney, Agent, or F...
US-3874088-A
Optical plumbing apparatus
United States Patent [191 Shaffer, Jr. [111 3,874,088 [451 Apr. 1,1975 [ OPTICAL PLUMBING APPARATUS [76] Inventor: William Shaffer, Jr., 3103 Carter, Pasadena, Tex. 77503 [22] Filed: Feb. 7, 1973 [21] Appl. No.: 330,295 260.205 5/1970 U.S.S.R 33/286 Primary Examiner-Harry N. l-laroian Assistant Examiner-Ric...
US-3874089-A
Thermal coupler for a dryness control circuit
United States Patent 1191 Offutt THERMAL COUPLER FOR A DRYNESS CONTROL CIRCUIT [75] Inventor: Carl R. Offutt, St. Joseph, Mich. [73] Assignee: Whirlpool Corp., Benton Harbor, Mich. [22] Filed: Aug. 27, 1973 [21] Appl. N0.: 391,552 317/235 Q; 324/65 R, 71 SN; 328/3; 307/310, 132; 219/494, 497, 499, 504, 505...
US-3874090-A
Method and apparatus for drying polymeric materials
United States Patent [191 McCracken [451 Apr. 1, 1975 METHOD AND APPARATUS FOR DRYIN POLYMERIC MATERIALS I [75] Inventor: Nathan John McCracken, Sarnia, Ontario, Canada [73] Assignee: Polysar Limited-Polysar Limitee, Sarnia, Ontario, Calif. 22 Filed: Mar. 2, 1973 21 Appl. No.: 337,701 Related U.S. Applica...
US-3874091-A
Printed paper drying device for offset printing
mte States Patent 1 1 1 3,874,091 Fukumoto Apr. 1, 1975 [54] PRINTED PAPER DRYING DEVICE FOR 2,473,629 6/1949 Andrews: 34/160 OFFSET PRINTING 2,532,032 11/1950 Offen..... 34/13 2,700,226 1/1955 Dun ler 34/160 [76] n ent T a Fukumoto, 3,680,218 8/1972 Belui 34/156 Sanno-cho l-chome, Ota-ku, T J Okyo apan Primary Examine...
US-3874092-A
Drying device for a rotary dragee-making kettle
United States Patent Huttlin Apr. 1, 1975 DRYING DEVICE FOR A ROTARY 3.83.38! 391329 gufini 331:3: ,2 .23 Ill 6 ain ..r.ll DRAGEE MAKING KETTLE 3,302,608 2/l967 Coons et al ll8/l9 [75] Inventor: Herbert Huttlin, Steinen, Germany [73] Assignee: Werner Glatt, Haltingen, Germany FOREIGN PATENTS OR APPLICATIONS 60,537 ...
US-3874093-A
Respiratory apparatus
United States Patent 91 11 3,874,093 Garbe Apr. 1, 1975 RESPIRATORY APPARATUS Primary E.\'aminerHarland LS. Skogquist [76] Inventor: Dietmar Rudolf Garbe, Maids Anomey Agen" or FlrmaBlerman & Blerman Moreton House, Maids Moreton, Buckingham, England 57] A T Flledl p 14, 1973 An anatomical model for teaching...
US-3874094-A
Preparation of skeletal display of animals
United States Patent 119] Mackey -451 Apr. 1, 1975 PREPARATION OF SKELETAL DISPLAY OF ANIMALS [76] Inventor: Walter J. Mackey, 1991 Sharondale Ave., St. Paul, Minn. 55113 [22] Filed: Feb. 6, 1974 211 Appl. No.: 439,874 OTHER PUBLICATIONS R. M. Anderson, Methods of Collecting and Preserving Vertebrate Animals," 1...
US-3874095-A
Educational aid for teaching inequalities
United States Patent 11 1 Dewaele 1 Apr. 1, 1975 1 EDUCATIONAL AID FOR TEACHING 6/1970 Stobbe.....,.. 35/31 F 2/1974 Romstad 35/31 E Priniary Examiner-Wm. H. Grieb Attorney, Agent, or Firm-John J. Swartz [57] ABSTRACT An educational device for demonstrating mathematical relationships between quantities including a supp...
US-3874096-A
Educational flash card assemblies
United States Patent [191 Romstad [451 Apr. 1, 1975 [2]] Appl. No.: 411,639 [52] US. Cl. 35/31 E, 35/75 [51] Int. Cl. G09b 1/36 [58] Field of Search 35/31 R, 31 D, 31 E, 31 G, [56] References Cited UNITED STATES PATENTS 565,797 8/1896 Roller 35/75 850,150 4/1907 Glazier.... 1,538,529 5/1925 Troidl 35/75 1,641,...