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03.01.1939 Petter, Guy Bazeley (P) : Calculating or Adding Machine
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03.01.1939 Arnold, Charles (P) NCR (P) : Switch for electric drives for calculating machines
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03.01.1939 Breitling, Ernst (P), Schwenk, Hans (P) NCR (P) : Accounting or the like machine f
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03.01.1939 Fuller, Frederick (P) et al : Combined Record Sorting and Accounting Machine
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03.01.1939 Luhn, Hans P. (P) : Measuring Device
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03.01.1939 Friden, Carl Mauritz Fredrick (P) Marchant (P) : Calculating Machine
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10.01.1939 Keuffel, Adolf W. (P) : Slide Rule
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10.01.1939 Harvey L. Spaunburg Veeder-Root (P) Inc. : Counting device
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10.01.1939 Högfors, Hans Fredrik Birger : Cash register, adding, and other calculating and accounting machine
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10.01.1939 Pott, August Friedrich (P) Mercedes (P) Büromaschinen-Werke AG : Shift device for calculating machines
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17.01.1939 Ludecke Fred, Victor Smith C : Calculating Device
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24.01.1939 G. T. Huxford : Method of and Apparatus for Telemetric Receiver Indicating
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31.01.1939 Foothorap, Harry Arthur (P) Underwood Elliott-Fisher (P) Comp. : Combined calculating and recording machine
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31.01.1939 Francis Everitt Philip Hughes Henry and Son Ltd : Calculating mechanism for measuring instruments
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07.02.1939 Fuller, Frederick (P) IBM (P) : Indicating mechanism for cash registers
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07.02.1939 Lewis Coppock Thomas : Copy holder for use with typewriters, calculating, and like machines
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14.02.1939 Muller, Robert (P) Burroughs (P) Adding Machine Comp. : Business machine
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21.02.1939 Bryce, James W.; Daly, George F. IBM (P) : Accounting machine
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21.02.1939 Crosman, Loring Pickering (P) Monroe (P) Calculating Machine Comp. : Listing calculator
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28.02.1939 G. Lerch Marchant (P) : Calculating Machine
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28.02.1939 Jacob C. Miller Badger Meter Mfg. Comp. : Register totalizer
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28.02.1939 Dahlberg, Tord Olof Rickard (P) Kooperativa Forbundet Forening u.p.a. : Cash register
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07.03.1939 H. E. Enders : Calculating Machine
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07.03.1939 G. J. Uhlig : Control Mechanism
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07.03.1939 Niemann, Frederick (P) Adolph et al : Calculating Machine
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14.03.1939 Daly, George F. (P) Gunne Lowkrantz IBM (P) : Tabulating machine
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14.03.1939 Richard Warren IBM (P) : Record controlled statistical machine
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14.03.1939 Rupert Christian Herzog : Calorie counter
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14.03.1939 C. Kuiper : Appliance for use in the Teaching of Arithmetic
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21.03.1939 Lasker, William Walter (P) Remington (P) Rand Inc : Automatic sub- and grand-totaling mechanism
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28.03.1939 Avery, Harold (P) Marchant (P) : Governor
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28.03.1939 Machado, Antony (P) Marchant (P) : Calculating Machine
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28.03.1939 Llorens Louis, George Moore : Adding and calculating machine
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28.03.1939 Lester E. Perry Commercial Solvents Corp. : Calculating device
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04.04.1939 Kübler, Carl Addiator (P) : Means for Mounting an Adding and Subtracting Device on Slide Rules
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04.04.1939 W. S. Lemmon et al : System of Coding and Decoding
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11.04.1939 Grover C. Coil Central National Bank Of Cleveland : Register
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11.04.1939 Schillaci, Edward : Perpetual calendar
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25.04.1939 Frank Rieber Continental Oil Comp. : Wave record analyzer
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25.04.1939 A. G. F. Kurowski : Combined Typewriting and Computing Machine
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02.05.1939 Neil Mcmurdo : Bridge score register
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02.05.1939 J. W. Lee : Computing Device
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02.05.1939 Bryce, James (P) IBM (P) : Tabulating machine
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02.05.1939 Torkelson, Torkel (P) IBM (P) : Printing mechanism
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09.05.1939 G. W. Hopkins, Jr. Marchant (P) : Calculating Machine
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09.05.1939 Pott, August Friedrich (P) : Calculating Machine
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16.05.1939 Muller, Robert (P) Burroughs (P) Adding Machine Comp. : Calculating machine
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16.05.1939 Eli Sanders : Pencil attachment
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16.05.1939 G. D. Rogers : Mechanical Calendar
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23.05.1939 Harvey N. Bliss Veeder-Root (P) Inc. : Counter
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23.05.1939 M. M. Borden : Integrator
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30.05.1939 Sundstrand, Oscar (P) Underwood Elliott-Fisher (P) Comp. : Algebraic totalizer
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30.05.1939 S. Hilder : Calculating Machine
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06.06.1939 Velma A. Gates : Rhythmic Cycle Calender
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06.06.1939 Rabenda, Edward J. (P) IBM (P) : Tabulating machine
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13.06.1939 Breitling, Ernst (P) NCR (P) : Locking means for levers
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13.06.1939 Avery, Harold (P) Marchant (P) : Electrical Control Device
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13.06.1939 Avery, Harold (P) et al Marchant (P) : Clutch and Power Transmission
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20.06.1939 Thomas L. Thurlow : Averaging device for observation instruments
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20.06.1939 A. Goldstein : Calculating Device
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04.07.1939 Knotz, Alois (P) : Money plate
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11.07.1939 Bryce, James (P), Dickinson, Arthur (P) IBM (P) : Calculating machine for effecting division
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11.07.1939 Cunningham, James (P) IBM (P) : Multiplying machine
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11.07.1939 Mills, Albert (P) IBM (P) : Tabulating machine
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11.07.1939 Paris Robert E Ibm : Automatically controlled calculating mechanism
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11.07.1939 Butler, Thomas M (P) Burroughs (P) Adding Machine Corp. : Calculating machine
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11.07.1939 W. W. Lasker et al : Accounting System and Machine
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11.07.1939 Garbell, Max (P) Victor (P) Adding Machine Co. : Rectifying means for printing mechanism
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11.07.1939 Anton Waeltz : Lumber rule
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11.07.1939 Hosack, Francis A. (P) : Calculating machine
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11.07.1939 William Calhoun Thompson : Dial adding machine
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18.07.1939 George E. Boeder : Formula-finding device
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18.07.1939 Martin William F : Calculating Machine
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25.07.1939 J.W. Bryce IBM (P) : Multiplying machine
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25.07.1939 Augustus Murray Bowzer : Golf-scoring device
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01.08.1939 Goldberg, Maximilian Meyer (P) NCR (P) : Accounting machine
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01.08.1939 Green, Charles (P) NCR (P) : Cash register
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01.08.1939 Charles L. Lee NCR (P) : Accounting machine
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01.08.1939 Hubert Neureiter NCR (P) : Repeat mechanism for cash registers and like machines
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01.08.1939 Clary, Hugh (P); Schwend Fred Clary (P) Multiplier Corp : Adding, subtracting, and multiplying machine
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01.08.1939 C. M. Bernegau : Slide Rule
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08.08.1939 Reynold B. Johnson IBM (P) : Indicating device
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08.08.1939 Berger, Friedrich W.F. (P) NCR (P) : Cash register
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08.08.1939 Daniel A. Roberts : Actuating means for typewriters and other mechanisms
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15.08.1939 Lincoln M. Keefe Remington (P) Rand Inc : Record controlled machine
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22.08.1939 L. M. Kells et al : Slide Rule
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22.08.1939 Hamann, Christel (P) DeTeWe (P) : Calculating machine
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22.08.1939 Bryce, James (P) IBM (P) : Key punch multiplying machine
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22.08.1939 Bryce, James (P) IBM (P) : Multiplying machine and impulse emitter therefor
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05.09.1939 E. M. Schantz : Apparatus for Giving Information Concerning Stocks and Bonds
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05.09.1939 Gould Stephen G Missouri Portland Cement Compa : Calculator
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05.09.1939 Anderson, Walter (P) Underwood (P) Elliott Fisher (P) Co : Supporting foot for adding machines
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05.09.1939 Ford, Eugene A. (P) IBM (P) : Electromagnetically operated setting mechanism
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05.09.1939 Gavin Thomas, Maby Adelbert IBM (P) : Calculating Machine
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05.09.1939 Georges Ziguelde IBM (P) : Accounting machine
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12.09.1939 Dreher, Elmer H. (P) : Calculating Machine
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12.09.1939 G. G. Going : Computing and like Machine
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12.09.1939 Lasker, William Walter (P) Walter F. Kelly Remington (P) Rand Inc : Accounting system
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12.09.1939 Charles O. Marshall Lawrence S. Williams Toledo Scale Mfg. Comp. : Computing device
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19.09.1939 Aurbach, Kurt (P) NCR (P) : Calculating machine and recording and the like machine
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19.09.1939 O. T. Handwerk : Measuring Instrument
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19.09.1939 P. M. Van Doormaal : Penetration Index Slide Rule
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19.09.1939 Pott, August Friedrich (P) Mercedes (P) Buromaschinen-Werke AG : Calculating machine
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19.09.1939 Pott, August Friedrich (P) Mercedes (P) Büromaschinen-Werke AG : Value transferring mechanism
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26.09.1939 Houck, Martin Delbert L. Rand : Instrument for computing data and corrections in gunfire
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26.09.1939 Beria, Biagio Società Anonima Officine Villar Perosa ( RIV (P) ) : Keyboard for Cash Registers and Other Calculating Machines
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26.09.1939 Papello, Karl (P) Bausch & Lomb Optical Comp. : Apparatus for gunnery calculators
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03.10.1939 Eller, Fritz : Cash register
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03.10.1939 Bryce, James W.; Daly, George F.; Lowkrantz, Gunne IBM (P) : Accounting apparatus
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03.10.1939 Carroll, Fred M. (P) Smith, Arthur F. (P) IBM (P) : Accounting machine
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03.10.1939 Carroll, Fred M. (P) IBM (P) : Accounting machine
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03.10.1939 Hall Keen, Harold IBM (P) : Record-card-controlled statistical machine
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10.10.1939 Goldberg, Maximilian Meyer (P) NCR (P) : Accounting machine
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10.10.1939 Anton Van Veen Denominator Comp. : Totalizer for counting machines
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17.10.1939 A. E. Oswald : Toy Typewriter
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17.10.1939 Green, Charles (P) NCR (P) : Cash register
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17.10.1939 Nelson, Gunnar (P) NCR (P) : Cash register
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17.10.1939 Hubert Neueiter Hans Schwenk NCR (P) : Bookkeeping machine
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17.10.1939 Chase, George (P) Monroe (P) Calculating Machine Comp. : Calculating machine
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17.10.1939 Placke, Everett H. (P) NCR (P) : Cash register
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17.10.1939 Payne, Walter B. (P) Todd (P) Comp. : Keyboard construction
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24.10.1939 Smith, Clyde (P) Addressograph Multigraph : Calculating and accounting machine
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24.10.1939 Smith, Clyde (P) Addressograph Multigraph : Calculating and accounting machine
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24.10.1939 Smith, Clyde (P) Addressograph Multigraph : Calculating and accounting machine
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24.10.1939 Smith, Clyde (P) Addressograph Multigraph : Electrical calculating machine
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24.10.1939 Smith, Clyde (P) Addressograph Multigraph : Calculating and accounting machine
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24.10.1939 Smith, Clyde (P) Addressograph Multigraph : Calculating Machine
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24.10.1939 H. Gilmore : Endless Slide Rule
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31.10.1939 Anderson, Walter (P) Underwood Elliott-Fisher (P) Comp. : Accounting machine
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31.10.1939 Bryce, James (P) IBM (P) : Sliding scale multiplying machine
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31.10.1939 Vigborg, Karl Matts (P) Kooperativa Förbundet Förening UPA : Tens transmitting device
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31.10.1939 John Earl Gates NCR (P) : Cash register and accounting machine
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31.10.1939 Robertson, William (P) NCR (P) : Transfer of totals for cash registers
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07.11.1939 Pitman, Henry L. (P) Underwood Elliott-Fisher (P) Comp. : Combined typewriting and computing machine
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07.11.1939 Charles McClure, Ernest Powers Accounting Machines, Ltd. : Calculating machine
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07.11.1939 Bryce, James (P) IBM (P) : Multiplying machine
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07.11.1939 B. Frazier : Basket
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14.11.1939 Frederick M. Trapnell : Navigational instrument
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14.11.1939 Lewis W. Imm : Balance computer
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28.11.1939 William B. Austin : Statistical machine
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05.12.1939 Charles L. Lee NCR (P) : Accounting machine
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05.12.1939 Fuller, Frederick (P) IBM (P) : Punching machine
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05.12.1939 Peirce, John Royden (P) IBM (P) : Accounting machine
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05.12.1939 Tauschek, Gustav (P) IBM (P) : Tabulating machine
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05.12.1939 Anderson, Walter (P) Underwood Elliott-Fisher (P) Comp. : Paper holding and feeding apparatus for computing machines
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05.12.1939 Anderson, Walter (P) Underwood (P) Elliott Fisher Comp. : Accounting machine
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12.12.1939 Oscar C. Levy American Totalisator (P) Comp. Inc. : Totalizing system
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19.12.1939 Arnold, Charles (P) NCR (P) : Accounting machine
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19.12.1939 Clifton King Rainey John F. Baker Forrest Andrews : Combined typewriting and accounting machine
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26.12.1939 John Fraser Avery-Hardoll Ltd. : Transfer mechanism for counting and computing mechanism
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02.05.1939 Kübler, Hans-Wolfgang : Calculating Instrument
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14.03.1939 Niemann, Frederick (P) Adolph et al Comptometer (P) : Calculating Machine
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24.01.1939 Keuffel, Adolf W. (P) : Slide Rule
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16.05.1939 Breitling, Ernst (P), Schwenk, Hans (P) NCR (P) : Cash register, accounting and the like machines
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19.09.1939 Gollwitzer, Walter (P) Addressograph-Multigraph : Printing machine