| US2736494A
              (en)
            
            * |  | 1956-02-28 |  | Square root calculating machine | 
        
          | US2736493A
              (en)
            
            * |  | 1956-02-28 |  | C ellerbeck | 
        
          | US2665070A
              (en)
            
            * |  | 1954-01-05 |  | Binary-octal-decimal computer | 
        
          | US2961155A
              (en)
            
            * |  | 1960-11-22 |  | Olsen | 
        
          | US2923925A
              (en)
            
            * |  | 1960-02-02 |  | Dickinson | 
        
          | BE469839A
              (OSRAM)
            
            * | 1941-04-24 |  |  |  | 
        
          | GB578041A
              (en)
            
            * | 1941-05-10 | 1946-06-13 | Standard Telephones Cables Ltd | Improvements in or relating to electrically operated calculating equipment | 
        
          | BE480690A
              (OSRAM)
            
            * | 1941-07-21 |  |  |  | 
        
          | US2434681A
              (en)
            
            * | 1943-02-13 | 1948-01-20 | Bell Telephone Labor Inc | Remotely controlled electrical calculator | 
        
          | GB564423A
              (en)
            
            * | 1943-03-02 | 1944-09-27 | Ncr Co | Improvements in or relating to multiplying machines | 
        
          | US2436178A
              (en)
            
            * | 1943-10-21 | 1948-02-17 | Rca Corp | Electronic computer for transforming polar into rectilinear coordinates | 
        
          | US2428812A
              (en)
            
            * | 1943-11-25 | 1947-10-14 | Rca Corp | Electronic computing device | 
        
          | US2473444A
              (en)
            
            * | 1944-02-29 | 1949-06-14 | Rca Corp | Computing system | 
        
          | US2668661A
              (en)
            
            * | 1944-11-23 | 1954-02-09 | Bell Telephone Labor Inc | Complex computer | 
        
          | US2552760A
              (en)
            
            * | 1945-05-02 | 1951-05-15 | Automatic Elect Lab | Binary calculator | 
        
          | US2724183A
              (en)
            
            * | 1945-12-27 | 1955-11-22 | Calibron Products Inc | Remotely controlled precision drive and calculating systems | 
        
          | US2493862A
              (en)
            
            * | 1946-10-03 | 1950-01-10 | Ibm | Dividing machine | 
        
          | US2977048A
              (en)
            
            * | 1946-12-17 | 1961-03-28 | Bell Telephone Labor Inc | Automatic calculator | 
        
          | US2594960A
              (en)
            
            * | 1946-12-31 | 1952-04-29 | Teleregister Corp | Electrical storage and signaling system | 
        
          | US2817477A
              (en)
            
            * | 1947-03-14 | 1957-12-24 | Bell Telephone Labor Inc | Electronic computer | 
        
          | US2679975A
              (en)
            
            * | 1947-05-14 | 1954-06-01 | Onera (Off Nat Aerospatiale) | Automatic binary calculating machine for matricial calculation | 
        
          | US2682814A
              (en)
            
            * | 1948-01-14 | 1954-07-06 | Graphic Arts Res Foundation In | Photocomposing apparatus | 
        
          | US2560172A
              (en)
            
            * | 1948-03-31 | 1951-07-10 | Automatic Elect Lab | Binary binomial sequential analyzer | 
        
          | US2659072A
              (en)
            
            * | 1949-01-13 | 1953-11-10 | John F Coales | Data transmission system for digital calculating machines or the like | 
        
          | US2703201A
              (en)
            
            * | 1949-03-24 | 1955-03-01 | Ibm | Electronic divider | 
        
          | US2597866A
              (en)
            
            * | 1949-06-02 | 1952-05-27 | Darrin H Gridley | Data conversion system | 
        
          | US2713680A
              (en)
            
            * | 1949-06-21 | 1955-07-19 | Northrop Aircraft Inc | Binary contact making counter | 
        
          | US2953777A
              (en)
            
            * | 1949-07-26 | 1960-09-20 | Darrin H Gridley | Shaft position converter device | 
        
          | US2792987A
              (en)
            
            * | 1949-07-28 | 1957-05-21 | George R Stibitz | Decimal-binary translator | 
        
          | US2593578A
              (en)
            
            * | 1949-09-15 | 1952-04-22 | Rca Corp | Relay counting circuit | 
        
          | US2713456A
              (en)
            
            * | 1949-10-24 | 1955-07-19 | Marchant Calculators Inc | Machine for translating binary values to decimal values | 
        
          | US2924815A
              (en)
            
            * | 1949-10-24 | 1960-02-09 | Smith Corona Marchant Inc | Binary decimal translators | 
        
          | US2657856A
              (en)
            
            * | 1949-11-15 | 1953-11-03 | Gen Electric | Number converter | 
        
          | US3039689A
              (en)
            
            * | 1949-11-28 | 1962-06-19 | Int Standard Electric Corp | Electrical notation converting circuits | 
        
          | FR1010220A
              (fr)
            
            * | 1950-01-28 | 1952-06-09 | Soicete D Electronique Et D Au | Convertisseurs de numération | 
        
          | CH279116A
              (de)
            
            * | 1950-02-01 | 1951-11-15 | Henke Hermann | Einrichtung zum Auswerten von durch Lochungen markierten Angaben, insbesondere auf Lochkarten. | 
        
          | DE848103C
              (de)
            
            * | 1950-03-30 | 1952-09-01 | Ibm Deutschland | Lochgesteuerter Binaer-Rechner mit Subtraktion | 
        
          | BE505292A
              (OSRAM)
            
            * | 1950-08-16 |  |  |  | 
        
          | NL163640B
              (nl)
            
            * | 1950-08-30 |  | Amp Inc | Elektrische drukschakelaar. | 
        
          | US2876687A
              (en)
            
            * | 1951-06-26 | 1959-03-10 | Graphic Arts Res Foundation In | Type composing apparatus | 
        
          | US2747797A
              (en)
            
            * | 1951-08-20 | 1956-05-29 | Hughes Aircraft Co | Rotational analogue-to-digital converters | 
        
          | US2910238A
              (en)
            
            * | 1951-11-13 | 1959-10-27 | Sperry Rand Corp | Inventory digital storage and computation apparatus | 
        
          | US2770415A
              (en)
            
            * | 1951-12-03 | 1956-11-13 | Clary Corp | Read-out and radix conversion apparatus for electronic computing apparatus | 
        
          | US2850232A
              (en)
            
            * | 1951-12-26 | 1958-09-02 | Northrop Aircraft Inc | Machine for digital differential analysis | 
        
          | US2741427A
              (en)
            
            * | 1952-04-29 | 1956-04-10 | Clary Corp | Calculating machine with keyboard instrumentalities for binary to decimal conversion | 
        
          | US2761620A
              (en)
            
            * | 1952-05-26 | 1956-09-04 | Clary Corp | Computing system | 
        
          | US2885148A
              (en)
            
            * | 1952-10-07 | 1959-05-05 | Burroughs Corp | Binary accumulator | 
        
          | US2793807A
              (en)
            
            * | 1952-10-18 | 1957-05-28 | Bell Telephone Labor Inc | Pulse code resolution | 
        
          | GB738294A
              (en)
            
            * | 1952-10-20 | 1955-10-12 | British Tabulating Mach Co Ltd | Improvements in or relating to data comparing devices | 
        
          | US2923471A
              (en)
            
            * | 1953-01-12 | 1960-02-02 | North American Aviation Inc | Binary-to-decimal converter and adder | 
        
          | US2763854A
              (en)
            
            * | 1953-01-29 | 1956-09-18 | Monroe Calculating Machine | Comparison circuit | 
        
          | US2822130A
              (en)
            
            * | 1953-03-06 | 1958-02-04 | Marchaut Calculators Inc | Readout and radix conversion from a mechanical register to a capacitive storage | 
        
          | US2866183A
              (en)
            
            * | 1953-04-24 | 1958-12-23 | Lab For Electronics Inc | Analog-to-digital converter | 
        
          | US2852764A
              (en)
            
            * | 1953-06-25 | 1958-09-16 | Barnes Eng Co | Data conversion system | 
        
          | US2888200A
              (en)
            
            * | 1953-07-01 | 1959-05-26 | Ncr Co | Circuitry for performing square root | 
        
          | US2877445A
              (en)
            
            * | 1953-08-24 | 1959-03-10 | Rca Corp | Electronic comparator | 
        
          | US2823344A
              (en)
            
            * | 1953-10-02 | 1958-02-11 | Bendix Aviat Corp | Direction-sensing code matching system for binary codes | 
        
          | US2866184A
              (en)
            
            * | 1953-12-14 | 1958-12-23 | Gen Precision Lab Inc | Analog to digital converter | 
        
          | GB762284A
              (en)
            
            * | 1954-01-07 | 1956-11-28 | Nat Res Dev | Digital encoders and decoders | 
        
          | US3165731A
              (en)
            
            * | 1954-03-09 | 1965-01-12 | Datex Corp | Digital coding and translating system | 
        
          | US2950469A
              (en)
            
            * | 1954-04-14 | 1960-08-23 | Honeywell Regulator Co | Analogue to digital conversion apparatus | 
        
          | US2884616A
              (en)
            
            * | 1954-04-30 | 1959-04-28 | Rca Corp | Multiple character comparator | 
        
          | US2880410A
              (en)
            
            * | 1954-10-05 | 1959-03-31 | Martin S Postman | Analog to digital transducer | 
        
          | US2873440A
              (en)
            
            * | 1954-10-26 | 1959-02-10 | United Aircraft Corp | Analogue-to-digital converter | 
        
          | US2935740A
              (en)
            
            * | 1954-11-04 | 1960-05-03 | Panellit Inc | Pressure transducer system | 
        
          | US2990114A
              (en)
            
            * | 1954-11-23 | 1961-06-27 | Eric T Hudec | Automatic number transfer from the registers of a calculator | 
        
          | US2989235A
              (en)
            
            * | 1954-12-31 | 1961-06-20 | Ibm | Binary-decimal conversion system | 
        
          | US2972740A
              (en)
            
            * | 1955-04-25 | 1961-02-21 | Cons Electrodynamics Corp | Shaft position digitizer | 
        
          | US3173504A
              (en)
            
            * | 1955-09-13 | 1965-03-16 | Fairbanks Morse Inc | Card operated batcher | 
        
          | US2977583A
              (en)
            
            * | 1955-09-19 | 1961-03-28 | Cons Electrodynamics Corp | Digital time encoder | 
        
          | US2909765A
              (en)
            
            * | 1955-12-23 | 1959-10-20 | Jr Harold L Humes | Radiant energy responsive communications system | 
        
          | US2934268A
              (en)
            
            * | 1956-05-28 | 1960-04-26 | Bell Telephone Labor Inc | Square root computer | 
        
          | US3038657A
              (en)
            
            * | 1957-01-02 | 1962-06-12 | Ibm | Electrical switching apparatus | 
        
          | US3156312A
              (en)
            
            * | 1957-02-08 | 1964-11-10 | Heltzel Steel Form And Iron Co | Apparatus for automatically discharging and weighing pre-selected plural materials | 
        
          | NL225541A
              (OSRAM)
            
            * | 1957-04-10 | 1900-01-01 |  |  | 
        
          | BE565139A
              (OSRAM)
            
            * | 1957-04-10 | 1900-01-01 |  |  | 
        
          | US3077589A
              (en)
            
            * | 1957-10-28 | 1963-02-12 | Clary Corp | Read-out system | 
        
          | US3141968A
              (en)
            
            * | 1958-12-18 | 1964-07-21 | Atomic Power Dev Ass Inc | Analog computer | 
        
          | US3099742A
              (en)
            
            * | 1959-03-13 | 1963-07-30 | Westinghouse Air Brake Co | Digital flow computer employing a logarithmic mode of computation | 
        
          | US3084860A
              (en)
            
            * | 1959-08-04 | 1963-04-09 | Western Electric Co | Decimal to binary number translating device | 
        
          | US3143290A
              (en)
            
            * | 1960-04-21 | 1964-08-04 | Hydroforce Ltd | Rotary converter | 
        
          | FR83308E
              (OSRAM)
            
            * | 1960-12-30 | 1964-11-25 |  |  | 
        
          | US3223324A
              (en)
            
            * | 1962-10-24 | 1965-12-14 | Sperry Rand Corp | Analog to digital converter and counter for fluid application | 
        
          | US3248727A
              (en)
            
            * | 1963-02-21 | 1966-04-26 | Bendix Corp | Position coder device | 
        
          | US3259884A
              (en)
            
            * | 1963-09-25 | 1966-07-05 | Control Data Corp | Reading machine with serial storage and parallel readout | 
        
          | US3798634A
              (en)
            
            * | 1969-11-24 | 1974-03-19 | Ricoh Kk | Method and apparatus for detecting and representing in binary form digital indication of measuring instrument for recording | 
        
          | US3953847A
              (en)
            
            * | 1974-03-25 | 1976-04-27 | Edo-Aire Mitchell Industries, Inc. | Position encoder |