Patent
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Patent:US3858798
07.01.1975 Jeffrey Feingold : Lettering layout calculator
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Patent:US3861337
21.01.1975 Thompson, Daniel (P) : Mechanical Memory Device
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Patent:US3862398
21.01.1975 Richard E. Toscan : Sailboat Racing Calculator
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Patent:US3876866
08.04.1975 Peter Dalzell Kaspar : Navigational calculator
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Patent:US3878612
22.04.1975 James B. Reed : Arrangement for Obtainig Distance Travelled and Ground Speed of an Aircraft
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Patent:US3880349
29.04.1975 James Richard Harte : Cylindrical calculator
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Patent:US3884113
20.05.1975 Leonard Verna M Leonard Verna M : Slide Rule Chord Indicator
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Patent:US3885133
20.05.1975 Zemanek, Rudolph (P); Zemanek, Elena (P) : Method and apparatus for calculating characteristics
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Patent:US3892353
01.07.1975 Charles H. Schuh : Slide Rule
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Patent:US3902169
26.08.1975 Izamu, Washizuka (P) Sharp (P) Kabushiki Kaisha : Drive System for Liquid Crystal Display Units
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Patent:US3902656
02.09.1975 Alan J. Rothchild : Slide Calculator Construction
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Patent:US3903397
02.09.1975 Kotaro Yata Yoshimaru Ohta Minolta Camera Kabushiki Kaisha : Electronic flash parameter calculator device
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Patent:US3903782
09.09.1975 Verna M. Leonard : Primary chord organizer
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Patent:US3908112
23.09.1975 Allan K. W. Lo, Jerry C. Nims : Calculator for stereoscopic Photography
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Patent:US3908895
30.09.1975 Granholm Lars E Outboard Marine Corp : Slide Rule for computing motor boat performance
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Patent:US3916161
28.10.1975 William C. Hancock USA, Secretary of the Army : Hexidecimal to binary conversion device
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Patent:US3916162
28.10.1975 Riehle, Harald (P) : Slide rule cursor
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Patent:US3916163
28.10.1975 Son H. Lee : Blend Calculator
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Patent:US3923243
02.12.1975 Daniel Barron : Ship board sonar range computer
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Patent:US3924104
02.12.1975 Daniel Barron : Noise and reverberation sonar range computer
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Patent:US3929081
30.12.1975 Ketterer, Stanley Joseph (P) Singer (P) Co. : Electro mechanical adder mechanism
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Patent:US3929279
30.12.1975 Hugh P.K. Dibley : Flight path calculator
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Patent:USD234360
18.02.1975 E. R. Duncan : Teaching Machine
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Patent:USD234372
18.02.1975 Baldwin, Richard Everest (P) : Slide Computer
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Patent:USD234430
04.03.1975 John F. Armour NCR Corp. : Accounting machine or similar article
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Patent:USD234469
11.03.1975 J. Lindsay : Navigation Instrument
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Patent:USD235231
27.05.1975 B. O. Mellberg : Geographical Time Calculator
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Patent:USD236271
12.08.1975 A. Herczog : Portable Calculator or the like
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Patent:USD236488
26.08.1975 G. F. Fossella : Calculator Case
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Patent:USD238282
30.12.1975 H. J. Shawen, R. D. Haney and J. L. Kohli : Financial Proof Machine or similar Article