Patent
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Patent:US3782626
01.01.1974 Iosif Hondrea : Slide Rule with Improved Calculating Capacity
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Patent:US3784093
08.01.1974 Kent H. Bennett : Fractormatic Slide Rule
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Patent:US3784797
08.01.1974 Joseph G. Kroll : Calculator for Determining the Specification of Cranes
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Patent:US3785240
15.01.1974 Elgie E. Hill : Chord Teaching Device for a Dtringed Instrument
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Patent:US3785553
15.01.1974 Willard D. Brown : Apparatus for determining the unit value of a line of type characters
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Patent:US3788541
29.01.1974 Norman Garner : Computation Device and Method
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Patent:US3790074
05.02.1974 Zemanek E, Zemanek R : Universal Unit-Converting Slide Rule
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Patent:US3791254
12.02.1974 Müller, Egon : Teaching and Demonstrating the Harmonic System
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Patent:US3792242
12.02.1974 Goodwin F. Hanson : Pocket Size Manual Adding Machine
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Patent:US3795363
05.03.1974 Paul Marie Esteve Henry Fabre : Indicator of the Maximum Torque Usable On a Helicopter Driven By a Turbo Motor
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Patent:US3795795
05.03.1974 Capron R. Gulbrandsen : Currency Converter
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Patent:US3803389
09.04.1974 Richard L. Yelverton : Course Line Computer
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Patent:US3807629
30.04.1974 Fukui O, Ishii A Matsuo Sangyo Kk : Slide Rule For Time Difference
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Patent:US3811205
21.05.1974 Mary Ann Pitzler : Sensorial Counting Board
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Patent:US3812729
28.05.1974 Stanley J. Ketterer Singer Comp. : Electromechanical disc adder mechanisms
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Patent:US3814308
04.06.1974 Andrew Kohan : Calculating Device
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Patent:US3820245
28.06.1974 Dominic F. Yozzo : Drawing Projector for Reproducing Curves
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Patent:US3821521
28.06.1974 Riehle, Harald (P) : Computing or Calculating Device
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Patent:US3822038
02.07.1974 Irving C. Olson : Multicoupler Percent Frequency Separation Calculator
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Patent:US3823478
16.07.1974 George T. Farmos : Drafting Device
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Patent:US3824692
23.07.1974 Guffey, John W.; Gillham, Richard D. : Lift planning apparatus
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Patent:US3825180
23.07.1974 John D.Gallagher : Aircraft Approach Guide
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Patent:US3825181
23.07.1974 Philip M. Banner : Tide and time calculating device
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Patent:US3829658
13.08.1974 Stanley Newman : Navigational Computers
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Patent:US3829663
13.08.1974 Wendell Y. Huo : Slide Rule with Decimal Point Location Means
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Patent:US3831839
27.08.1974 Albert Boardman : Racing Calculator
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Patent:US3831840
27.08.1974 Faucheux P Fresa Ets : Composite Slide Rule
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Patent:US3834614
10.09.1974 Noble A Noble A : Decimal Point Indicator For Slide Rule
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Patent:US3835298
10.09.1974 Joseph D. DeAndrea : Calculating mathematical functions
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Patent:US3835299
10.09.1974 Peter Baldwin Turney : Navigational Computers
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Patent:US3837569
24.09.1974 Robert C. Bradbury, Joseph H. Sullivan : Metric Conversion Ruler
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Patent:US3843047
22.10.1974 Kouichi Otsuka, Yukio Fujimi : Writing Instrument with Counter
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Patent:US3843048
22.10.1974 Haase, Kurt (P) : Ruler Device for Decimal-Octal Conversion
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Patent:US3850072
26.11.1974 Dudley Kilburn Maurice Fuller : Improvements in or Relating to Instructional Apparatus for Use in Learning the Construczion of Musical Chords
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Patent:US3853264
10.12.1974 J. Warren Hovorka : Football statistic calculating and recording rule
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Patent:US3853265
10.12.1974 Heinz Kunert : Nomogram Type Calculator
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Patent:USD230375
12.02.1974 Donald L. Forsythe Jerome U. Brown NCR (P) : Accounting machine or similar article
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Patent:USD231357
16.04.1974 M. R. Meyers and M. Langieri : Educational Mathematical Toy
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Patent:USD231796
11.06.1974 W. K. Schwarz and D. J. Schlink : Conversion Calculator
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Patent:USD232194
23.07.1974 R. L. Conway, R. V. Jones and D. L. Schaum : Teller Station Printer
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Patent:USD232195
23.07.1974 R. L. Conway, R. V. Jones and D. L. Schaum : Teller Station Printer
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Patent:USD232945
24.09.1974 R. L. Conway, R. V. Jones and D. L. Schaum : Teller Station
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Patent:USD233799
26.11.1974 H. Finkel : Calculator Housing
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Patent:USRE28033
04.06.1974 J. E. Hannon : Calculator for Making Patterns