Patent
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Patent:US1742521
07.01.1930 Gubelmann, William S. (P) : Adding and recording machine
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Patent:US1742522
07.01.1930 Gubelmann, William S. (P) : Adding and recording machine
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Patent:US1742523
07.01.1930 Gubelmann, William S. (P) : Printing mechanism
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Patent:US1742524
07.01.1930 Gubelmann, William S. (P) : Key mechanism for key controlled machines
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Patent:US1742525
07.01.1930 Gubelmann, William S. (P) : Counting mechanism for calculating and like machines
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Patent:US1742526
07.01.1930 Gubelmann, William S. (P) : Numbering mechanism for calculating and like machines
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Patent:US1742527
07.01.1930 Gubelmann, William S. (P) : Transformation mechanism for calculating machines
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Patent:US1742528
07.01.1930 Gubelmann, William S. (P) : Split calculating machine
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Patent:US1742529
07.01.1930 Gubelmann, William S. (P) : Carriage mechanism for calculating and like machines
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Patent:US1742530
07.01.1930 Gubelmann, William S. (P) : Nonprint mechanism for calculating and like machines
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Patent:US1742532
07.01.1930 Gubelmann, William S. (P) : Repeating mechanism for calculating and like machines
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Patent:US1742533
07.01.1930 Gubelmann, William S. (P) : Correction mechanism for key-controlled machines
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Patent:US1742534
07.01.1930 Gubelmann, William S. (P) : Duplicate-printing mechanism for calculating and like machines
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Patent:US1742535
07.01.1930 Gubelmann, William S. (P) : Word-printing mechanism
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Patent:US1742701
07.01.1930 Fuller, Frederick (P) Remington (P) Arms Comp. : Key-operated cash register
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Patent:US1742824
07.01.1930 A. Rozman : Calculating Machine
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Patent:US1743024
07.01.1930 Clark, Edward (P) : Scriber and Ellipsograph
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Patent:US1743239
14.01.1930 Eliott P. Ross Ford Instrument Comp., Inc. : Navigational computing instrument
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Patent:US1743853
14.01.1930 T. R. Harrison : Meter
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Patent:US1744033
21.01.1930 Berger, Friedrich W.F. (P) NCR (P) : Cash register
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Patent:US1744183
21.01.1930 von Pein, Edward (P) NCR (P) : Cash Register
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Patent:US1744347
21.01.1930 : Coding machine
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Patent:US1744502
21.01.1930 Henry Resch Elliott-Fisher (P) Comp. : Combined typewriting and computing machine
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Patent:US1744771
28.01.1930 George Alfred Julius : Machine for printing and issuing totalizator tickets and for operating totalizator registers and indicators
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Patent:US1745283
28.01.1930 von Pein, Edward (P) NCR (P) : Cash register
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Patent:US1746761
11.02.1930 J. Brendle : Time Recording Instrument
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Patent:US1747397
18.02.1930 Shipley, Bernis (P) NCR (P) : Cash register
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Patent:US1747743
18.02.1930 Sundstrand, Oscar (P) Sundstrand (P) Corp. : Printing mechanism
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Patent:US1748783
25.02.1930 Mcgaughy John B : Gas-orifice meter-chart calculating machine
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Patent:US1749694
04.03.1930 Broman Charles E Add Index Corp : Adding and recording machine
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Patent:US1749933
11.03.1930 : Apparatus for selective verbatim coding and decoding
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Patent:US1749960
11.03.1930 Shipley, Bernis (P) NCR (P) : Cash register
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Patent:US1750456
11.03.1930 Ferdinand H. Borm : Registering-device actuating means
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Patent:US1750459
11.03.1930 Carroll, Fred M. (P) Tabulating Machine (P) Company : Individually resettable accumulator unit tabulator
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Patent:US1750565
11.03.1930 Britten, Edwin (P) Monroe (P) Calculating Machine Comp. : Zero key machanism for key set registers
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Patent:US1751609
25.03.1930 Turck, Joseph Abraham Valentine (P) : Calculating Machine
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Patent:US1753288
08.04.1930 Fuller, Frederick (P) Remington (P) Arms Comp. Inc. : Cash register
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Patent:US1753479
08.04.1930 Robertson, William (P) NCR (P) : Elastic drive for cash registers
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Patent:US1753711
08.04.1930 Lee Starr McCorn Remington (P) Typewriter Comp. : Computing machine
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Patent:US1754049
08.04.1930 Rieckhof, Christian (P) : Method for determining the action of forces upon static constructions
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Patent:US1756401
29.04.1930 Sundstrand, Oscar (P) Sundstrand (P) Corp. : Tabulator
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Patent:US1757123
06.05.1930 Clair D. Lake Ralph E. Page Tabulating Machine (P) Company : Tabulating machine
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Patent:US1757134
06.05.1930 Muller, Robert (P) Burroughs (P) Adding Machine Comp. : Accounting machine
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Patent:US1757669
06.05.1930 Johantgen, Oliver David (P) Victor (P) Adding Machine Co. : Flexible handle connection for calculating machines
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Patent:US1758016
13.05.1930 Sundstrand, Oscar (P) Sundstrand (P) Corp. : Transfer mechanism
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Patent:US1758819
13.05.1930 Berger, Friedrich W.F. (P) NCR (P) : Cash register
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Patent:US1758861
13.05.1930 Shipley, Bernis (P) NCR (P) : Cash register
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Patent:US1759069
20.05.1930 Sundstrand, Oscar (P) Sundstrand (P) Corp. : Cash register or similar machine
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Patent:US1760870
03.06.1930 Breitling, Ernst (P) Fried. Krupp (P) AG : Line-adjusting mechanism
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Patent:US1761430
03.06.1930 Degener, Gustave O. (P) Royal Typewriter (P) Comp. : Adding attachment for typewriting machines
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Patent:US1761432
03.06.1930 Degener, Gustave O. (P) Royal Typewriter (P) Comp. : Adding attachment for typewriting machines
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Patent:US1761542
03.06.1930 Shipley, Bernis (P) NCR (P) : Cash register
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Patent:US1761547
03.06.1930 Frederick H. Tyler NCR (P) : Cash register
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Patent:US1761548
03.06.1930 von Pein, Edward (P) NCR (P) : Cash register
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Patent:US1761556
03.06.1930 Arnold, Charles (P) NCR (P) : Cash register
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Patent:US1761571
03.06.1930 Kropff, Wilhelm (P) NCR (P) : Cash Register
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Patent:US1761572
03.06.1930 Kropff, Wilhelm (P) NCR (P) : Cash register
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Patent:US1761644
03.06.1930 Shipley, Bernis (P) NCR (P) : Cash register
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Patent:US1761651
03.06.1930 Brand, Samuel (P) NCR (P) : Cash register
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Patent:US1761662
03.06.1930 Goldberg, Maximilian Meyer (P) NCR (P) : Auditing machine
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Patent:US1761684
03.06.1930 Robertson, William (P) NCR (P) : Auditing machine
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Patent:US1761689
03.06.1930 Shipley, Bernis (P) NCR (P) : Cash register
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Patent:US1761742
03.06.1930 N. W. Perkins : Subtraction Control for Calculating Machines
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Patent:US1761774
03.06.1930 Carroll, Fred M. (P) Tabulating Machine (P) Company : One revolution clutch
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Patent:US1762145
10.06.1930 George F. Daly Ralph E. Page Tabulating Machine (P) Company : Tabulating machine
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Patent:US1763650
17.06.1930 Harry W. Gregory Remington (P) Arms Comp. : Cash Register
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Patent:US1763699
17.06.1930 Green, Charles (P) Remington (P) Arms Comp. : Cash register
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Patent:US1764959
17.06.1930 Clarence L. Johnston Carl M.F. Friden (P) Marchant (P) Calculating Machine Comp. : Calculating machine
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Patent:US1765697
24.06.1930 Herron Wilmer B Palmer Nelson P : Calculating Machine
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Patent:US1767673
24.06.1930 Horton, Allen (P) Charles Marti Burroughs (P) Adding Machine Comp. : Key lock for calculating machines
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Patent:US1767674
24.06.1930 Horton, Allen (P) Burroughs (P) Adding Machine Comp. : Transfer mechanism for calculating machines
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Patent:US1767765
24.06.1930 Landsiedel, Harry (P) Remington Rand (P) Inc : Adding Machine
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Patent:US1767792
24.06.1930 Hart, Frederick (P) Remington (P) Accounting Machine Comp. : Combined typewriting and computing machine
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Patent:US1769759
01.07.1930 J. F. Stimson et al : Perpetual Calendar
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Patent:US1770089
08.07.1930 Simones Paul J : Checking mechanism for adding machines
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Patent:US1770304
08.07.1930 Ferris Harry H : Calculating Device
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Patent:US1770461
15.07.1930 Wilbur A. Cogshall : Device for determining solar altitudes
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Patent:US1770708
15.07.1930 William L. Paden Ohmer Fare Register Comp. : Indicator control device for cash registers
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Patent:US1771614
29.07.1930 Birney W. Bowman Bridge Specialties Comp. : Score-calculating device
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Patent:US1773025
12.08.1930 Chase, George Clinton (P) : Carriage Shift Controll for Calcualting Machines
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Patent:US1773026
12.08.1930 Chase, George (P) Monroe (P) Calculating Machine Comp. : Carriage-shifting mechanism for calculators
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Patent:US1773027
12.08.1930 Chase, George (P) Monroe (P) Calculating Machine Comp. : Calculating machine
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Patent:US1773145
19.08.1930 Kassner, Ernst (P) : Calculating Machine
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Patent:US1773392
19.08.1930 Eichenauer, Konrad (P) Rheinmetall (P) (Rheinische Metallwaaren- und Maschinenfabrik) : Calculating machine for all species
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Patent:US1773816
26.08.1930 J. E. Lea : Apparatus for Measuring Granular Materials Volumetrically
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Patent:US1774177
26.08.1930 E. Harris : Calculating Device
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Patent:US1774287
26.08.1930 Muller, Robert (P) Burroughs (P) Adding Machine Comp. : Paper feeding equipment for accounting machines
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Patent:US1774289
26.08.1930 Pasinski, Walter (P) Burroughs (P) Adding Machine Comp. : Transfer mechanism
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Patent:US1775066
02.09.1930 Adolph Buxova Bulova Watch Comp. : Watch and golf score
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Patent:US1775117
09.09.1930 Bryce, James (P) Tabulating Machine (P) Company : Stationary commutator-type tabulator
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Patent:US1775132
09.09.1930 Lake, Clair D.; Storey, Frederick A. Tabulating Machine Comp. : Tabulating machine
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Patent:US1775223
09.09.1930 Harry A. Foothorap Elliott-Fisher (P) Comp. : Computing machine
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Patent:US1775326
09.09.1930 John H.F. Silver : Control mechanism for calculating machines
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Patent:US1776076
16.09.1930 Kuhrt, Ernst (P) Brunsviga (P) : Printing Mechanism for Calculating Machines
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Patent:US1777430
07.10.1930 C. E. A. Claus : Typewriter Calculating Machine
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Patent:US1777692
07.10.1930 Fuss, Herbert (P) : Calculating Apparatus
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Patent:US1777898
07.10.1930 Rudin, Karl Viktor (P) : Transfer mechanism
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Patent:US1778037
14.10.1930 Perry Okey : Computing device
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Patent:US1778506
14.10.1930 Pasinski, Walter (P) Burroughs (P) Adding Machine Comp. : Accounting machine
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Patent:US1779504
28.10.1930 Arthur Thomas Accounting and Tabulating Corp O : Calculating Device
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Patent:US1779717
28.10.1930 Sundstrand, Oscar (P) Sundstrand (P) Corp. : Computing and printing machine
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Patent:US1779774
28.10.1930 George Alfred Julius, Francis Julius Awdry : Means for calculating the ratio of variable quantities
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Patent:US1780078
28.10.1930 M. P. Hite : Calculating Device
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Patent:US1780237
04.11.1930 Bernard S. Leslie Krippendorf Kalculator Comp. : Area-estimating device for sheet material
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Patent:US1780494
04.11.1930 Mcnally John R : Calculating Device
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Patent:US1780621
04.11.1930 Lasker, William Walter (P) Remington (P) Rand Inc : Tabulating-machine
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Patent:US1780685
04.11.1930 Peirce, John Royden (P) IBM (P) : Printing tabulating machine
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Patent:US1780884
04.11.1930 Martin Lebeis Remington (P) Rand Inc : Tabulating machine
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Patent:US1781179
11.11.1930 Horton, Allen (P) Burroughs (P) Adding Machine Comp. : Transfer mechanism for calculating machines
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Patent:US1781320
11.11.1930 Crosman, Loring Pickering (P) Monroe (P) Calculating Machine Comp. : Zero setting device
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Patent:US1781689
18.11.1930 Horton, Allen (P) Burroughs (P) : Controlling mechanism for power-driven calculating machines
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Patent:US1782294
18.11.1930 Charles Louis Florisson Soc. de Condensation et d Applications Mecaniques : Method and apparatus for torpedo-firing operations
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Patent:US1783398
02.12.1930 Joseph Zubaty A C Spark Plug Comp. : Reset mechanism for odometers
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Patent:US1783769
02.12.1930 Mortimer F. Bates Sperry Gyroscope Comp. Inc. : Bomb sight
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Patent:US1783943
02.12.1930 Kassner, Ernst (P) : Combined duplex adding machine and cash register
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Patent:US1784862
16.12.1930 Barrett, Glenn (P) J. Portable Adding Machine Compan : Adding Machine
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Patent:US1784929
16.12.1930 Georges Estopfey : Aerial navigation instrument
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Patent:US1785525
16.12.1930 M. Morrison : Integrator and Recorder
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Patent:US1786059
23.12.1930 William Eraser : Aeronautical indicator
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Patent:US1786164
23.12.1930 Kottmann, August (P) Rheinmetall (P) Rheinische Metallwaaren und Maschinenfabrik : Drive for the stepped drums of calculating machines
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Patent:US1786454
30.12.1930 Robertson, William (P) NCR (P) : Cash register
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Patent:US1786525
30.12.1930 Goldberg, Maximilian Meyer (P) NCR (P) : Computing machine
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Patent:US1787259
30.12.1930 Payne Walter, Bohrer Raymond, William Fuhlborn Todd Company (P) Inc : Calculating Machine
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Patent:US1825462
12.03.1930 Link, Edwin (P) : Combination Training Device for Student Aviators and Entertainment Apparatus
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Patent:US1974239
26.05.1930 Gorbatchewsky, Alexis : Calculating machine