Patent
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Patent:US3552310
05.01.1971 Clary, John (P) Addmaster (P) Corp. : Ribbon inker means in zero print suppressing means
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Patent:US3554074
12.01.1971 James C. Rickey : Stringed Instrument Teaching Device
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Patent:US3562940
16.02.1971 Carpon R. Gulbransen, Jerre G. Kneip : Calculator
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Patent:US3563456
16.02.1971 Wendell H. Hendricks Robert A. Strong : Type-fitting calculator apparatus
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Patent:US3564208
16.02.1971 Machmer, Wilhelm (P) et al Diehl (P) : Apparatus for Preventing Printing and Indicating the Same in Calculating Machines in Case the Capacity of the Calculating Machine is Exceeded
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Patent:US3565197
23.02.1971 William L. Carter : Weight control guide
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Patent:US3565335
23.02.1971 Donald L.Holden Universal Oil Prod Co. : Device for Calculating Quantitive Composition of a Substance from an X-Ray Spectroscopic Analysis
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Patent:US3567114
02.03.1971 Burke Frees : Medicare Calculator
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Patent:US3568921
09.03.1971 Lydfors, John (P) Addo (P) : Power-Driven Calculating Machine
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Patent:US3568922
09.03.1971 Paul M. Pepper : Slide Rule
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Patent:US3568923
09.03.1971 Loyal H. Chapman : Aeronautical Computer
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Patent:US3569994
09.03.1971 Ben W. Rau : Navigational Computer
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Patent:US3570757
16.03.1971 Wells Joseph W Associated Spring Corp : Slide Rule For Belleville Springs
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Patent:US3571932
23.03.1971 Peddie John : DigitalPlanimeter
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Patent:US3572583
30.03.1971 Joseph E. Hannon : Slide Rule for Making Patterns
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Patent:US3572584
30.03.1971 Richard Paul Weaver Talivaldis Cepuritis : Weight reduction calculator
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Patent:US3572585
30.03.1971 Richard Paul Weaver Upjohn Comp. : Weight reduction calculator
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Patent:US3578241
11.05.1971 Wombough Philip, Tallerino Charles : Slide Rule For Scuba Divers
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Patent:US3581982
01.06.1971 Clary, John (P) Milton V. Scozzafava Addmaster (P) Corp. : Pin carriage return mechanism
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Patent:US3586844
22.06.1971 Hanbicki Richard B Madatron Princeton Inc : Electronic Slide Rule
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Patent:US3591777
06.07.1971 Naive, Joel A.; Van Benschoten, Peter J. : Register incorporating unidirectional transfer means
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Patent:US3592099
13.07.1971 Delbert F. Gibby : Slide Rule for Computing Musical Relationships
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Patent:US3598414
10.08.1971 Khigh Alx Dhiegh : Method and Apparatus for Determining and Studying Philosophical and Oracle Responses
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Patent:US3600559
01.08.1971 Tokyo Denki Kabushiki Kaisha Rii Watanabe : Division device for use in motor operated calculators
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Patent:US3604619
14.09.1971 Abbiati, Ettore (P) Olivetti (P) : Biquinary Calculating Machine
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Patent:US3604620
14.09.1971 Rodney S. Rakes : Calculator for Different Numerical Bases
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Patent:US3604621
14.09.1971 Walter S. Drummond : Improved Slide Rule Arrangement
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Patent:US3604622
14.09.1971 Yoshihiko Yamada : Roentgenogram-Taking Condition Conversion Scale
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Patent:US3604623
14.09.1971 Lawrence M. Sherman James E. Richardson Cambridge Research and Develpment Group : Coital timing device
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Patent:US3605307
20.09.1971 Alexander Dickson, Albert : Perpetual calendars
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Patent:US3609299
28.09.1971 Jerauld G. Wright : Navigational Computer
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Patent:US3610520
05.10.1971 Raymond S. Connell : Communications Calculator
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Patent:US3610758
05.10.1971 Maoyeh Lu Beckman Instruments, Inc. : Calculator for monochromator dispersion
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Patent:US3617708
02.11.1971 Anthony S. Bongiovanni : Marker-Counter Device
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Patent:US3618591
09.11.1971 Edward C. Bradley John W. Barr : Cardiac output determination method for use with dye dilution procedures
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Patent:US3620445
01.11.1971 Toshiki Kawamura Tohru Ohneda Kikuo Taguchi Kabushiki kaisha Hattori Tokeiten Chuo-ku : Calculating mechanism for calculating machine
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Patent:US3621578
23.11.1971 Stephen Novakovic : Navigational instrument
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Patent:US3621750
23.11.1971 V. M. Leonard : Slide Rule Chord Selector
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Patent:US3621777
23.11.1971 Clary, John (P) Addmaster (P) Corp. : Type sector setting means in data printers
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Patent:US3622756
02.11.1971 Richard E. Busch Addmaster (P) Corp. : Pin carriage for adding and calculating machines
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Patent:US3625417
07.12.1971 USA John W. Slauter : Calculator means for boating
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Patent:US3625418
07.12.1971 Ernesto F. Colon Government of the Commonwealth of Puerto Rico : Device for determining female fertility periods
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Patent:US3625419
07.12.1971 Barron, Daniel (P) : Sonar Slide Rule
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Patent:US3627199
14.12.1971 Robert R. Hill Lee Wilson Engineering Comp. Inc. : Annealing time calculator
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Patent:US3627200
14.12.1971 Jesse W. Sadler : Mechanical Golf Handicapper
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Patent:US3630435
28.12.1971 Jack B. Titus : Aerotrack, Air-Navigation Triangulation Computer
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Patent:US3703986
11.01.1971 Miyake Kenji, Kunitachi-shi (Japan) Citizen (P) : Setting carriage return mechanism
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Patent:US3722795
08.02.1971 Citizen (P) : DIVISION CONTROL MECHANISM
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Patent:USD221802
07.09.1971 A. W. Learned III and R. C. Learned : Slide Rule
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Patent:USD221896
14.09.1971 J. E. Richardson : Fertility Timing Calculator