| 
            
              US3225305A
              (en)
            
            *
            
           | 
          1954-04-29 | 
          1965-12-21 | 
          Franklin F Offner | 
          Symmetrical transistor amplifier which is self-compensating with respect to changes in temperature 
        | 
        
        
          | 
            
              NL196824A
              (browse.php)
            
            *
            
           | 
          1954-05-03 | 
           | 
           | 
           | 
        
        
          | 
            
              US2933620A
              (en)
            
            *
            
           | 
          1954-05-27 | 
          1960-04-19 | 
          Sylvania Electric Prod | 
          Two-input ring counters 
        | 
        
        
          | 
            
              US2860258A
              (en)
            
            *
            
           | 
          1954-09-17 | 
          1958-11-11 | 
          Bell Telephone Labor Inc | 
          Transistor decade counter 
        | 
        
        
          | 
            
              US3017084A
              (en)
            
            *
            
           | 
          1954-11-26 | 
          1962-01-16 | 
          Raytheon Co | 
          Magnetic core shift register 
        | 
        
        
          | 
            
              US2876438A
              (en)
            
            *
            
           | 
          1955-01-20 | 
          1959-03-03 | 
          Burroughs Corp | 
          Regenerative shift register 
        | 
        
        
          | 
            
              US2910594A
              (en)
            
            *
            
           | 
          1955-02-08 | 
          1959-10-27 | 
          Ibm | 
          Magnetic core building block 
        | 
        
        
          | 
            
              US2954481A
              (en)
            
            *
            
           | 
          1955-03-17 | 
          1960-09-27 | 
          Sperry Rand Corp | 
          Digital multivibrator 
        | 
        
        
          | 
            
              BE549077A
              (browse.php)
            
            *
            
           | 
          1955-06-28 | 
           | 
           | 
           | 
        
        
          | 
            
              US2964693A
              (en)
            
            *
            
           | 
          1955-08-17 | 
          1960-12-13 | 
          Honeywell Regulator Co | 
          Current regulator 
        | 
        
        
          | 
            
              US2964694A
              (en)
            
            *
            
           | 
          1955-08-17 | 
          1960-12-13 | 
          Honeywell Regulator Co | 
          Electrical regulating apparatus 
        | 
        
        
          | 
            
              DE1068763B
              (de)
            
            *
            
           | 
          1955-08-23 | 
          1959-11-12 | 
          Automatic Electric Laboratories, Inc., Chicago, 111. (V. St. A.) | 
          Schaltungsanordnung zum zweidrahtmäßigen Verbinden von Leitungsabschnitten über eine Zeitmultiplexubertragungsleitung 
        | 
        
        
          | 
            
              US2925958A
              (en)
            
            *
            
           | 
          1955-10-25 | 
          1960-02-23 | 
          Kienzle Apparate Gmbh | 
          Method and apparatus for counting electrical impulses 
        | 
        
        
          | 
            
              US2937332A
              (en)
            
            *
            
           | 
          1955-12-19 | 
          1960-05-17 | 
          Gordon H Cork | 
          Magnetic relay 
        | 
        
        
          | 
            
              US2958075A
              (en)
            
            *
            
           | 
          1956-01-30 | 
          1960-10-25 | 
          Sperry Rand Corp | 
          Shift register 
        | 
        
        
          | 
            
              NL207695A
              (browse.php)
            
            *
            
           | 
          1956-06-05 | 
           | 
           | 
           | 
        
        
          | 
            
              NL218614A
              (browse.php)
            
            *
            
           | 
          1956-07-02 | 
           | 
           | 
           | 
        
        
          | 
            
              US2849624A
              (en)
            
            *
            
           | 
          1956-08-31 | 
          1958-08-26 | 
          Richard L Snyder | 
          Saturable reactance circuits 
        | 
        
        
          | 
            
              NL220446A
              (browse.php)
            
            *
            
           | 
          1956-09-04 | 
           | 
           | 
           | 
        
        
          | 
            
              GB822937A
              (en)
            
            *
            
           | 
          1956-10-22 | 
          1959-11-04 | 
          Gen Electric Co Ltd | 
          Improvements in or relating to digital data storage apparatus 
      | 
        
        
          | 
            
              US2971332A
              (en)
            
            *
            
           | 
          1956-11-13 | 
          1961-02-14 | 
          Bendix Corp | 
          Electrical timing control apparatus 
        | 
        
        
          | 
            
              NL133227C
              (browse.php)
            
            *
            
           | 
          1956-12-03 | 
           | 
           | 
           | 
        
        
          | 
            
              US2941090A
              (en)
            
            *
            
           | 
          1957-01-31 | 
          1960-06-14 | 
          Rca Corp | 
          Signal-responsive circuits 
        | 
        
        
          | 
            
              NL98358C
              (browse.php)
            
            *
            
           | 
          1957-03-22 | 
           | 
           | 
           | 
        
        
          | 
            
              US2903601A
              (en)
            
            *
            
           | 
          1957-03-29 | 
          1959-09-08 | 
          Burroughs Corp | 
          Transistor-magnetic core relay complementing flip flop 
        | 
        
        
          | 
            
              US2912681A
              (en)
            
            *
            
           | 
          1957-05-08 | 
          1959-11-10 | 
          Paull Stephen | 
          Counter circuit 
        | 
        
        
          | 
            
              US2955264A
              (en)
            
            *
            
           | 
          1957-05-24 | 
          1960-10-04 | 
          Rca Corp | 
          Modulation system 
        | 
        
        
          | 
            
              US3007142A
              (en)
            
            *
            
           | 
          1957-06-06 | 
          1961-10-31 | 
          Ibm | 
          Magnetic flux storage system 
        | 
        
        
          | 
            
              US2925469A
              (en)
            
            *
            
           | 
          1957-08-02 | 
          1960-02-16 | 
          Rca Corp | 
          Multiplex modulation communication system 
        | 
        
        
          | 
            
              US3061797A
              (en)
            
            *
            
           | 
          1957-11-07 | 
          1962-10-30 | 
          Bell Telephone Labor Inc | 
          Shifting reference transistor oscillator 
        | 
        
        
          | 
            
              US3010096A
              (en)
            
            *
            
           | 
          1957-12-27 | 
          1961-11-21 | 
          Westinghouse Electric Corp | 
          Counter circuit 
        | 
        
        
          | 
            
              BE569266A
              (browse.php)
            
            *
            
           | 
          1957-12-31 | 
           | 
           | 
           | 
        
        
          | 
            
              US2966595A
              (en)
            
            *
            
           | 
          1957-12-31 | 
          1960-12-27 | 
          Ibm | 
          Pulse sensing system 
        | 
        
        
          | 
            
              US2989651A
              (en)
            
            *
            
           | 
          1957-12-31 | 
          1961-06-20 | 
          Bell Telephone Labor Inc | 
          Transistor pulse generator 
        | 
        
        
          | 
            
              US3134023A
              (en)
            
            *
            
           | 
          1958-04-11 | 
          1964-05-19 | 
          Ibm | 
          Protection of transistor circuits against predictable overloading 
        | 
        
        
          | 
            
              BE538749A
              (browse.php)
            
            *
            
           | 
          1958-04-21 | 
           | 
           | 
           | 
        
        
          | 
            
              US3056931A
              (en)
            
            *
            
           | 
          1958-05-07 | 
          1962-10-02 | 
          Itt | 
          Transistorized generator of telephone ringing current 
        | 
        
        
          | 
            
              US3030521A
              (en)
            
            *
            
           | 
          1958-05-29 | 
          1962-04-17 | 
          William H Lucke | 
          Magnetic core binary counter 
        | 
        
        
          | 
            
              US3002107A
              (en)
            
            *
            
           | 
          1958-06-02 | 
          1961-09-26 | 
          Ibm | 
          Transformer coupling of logical circuits 
        | 
        
        
          | 
            
              US3018389A
              (en)
            
            *
            
           | 
          1958-06-03 | 
          1962-01-23 | 
          Rca Corp | 
          Delay circuit using magnetic cores and transistor storage devices 
        | 
        
        
          | 
            
              US3102206A
              (en)
            
            *
            
           | 
          1958-06-11 | 
          1963-08-27 | 
          Gen Electric | 
          Saturable current transformer-transistor circuit 
        | 
        
        
          | 
            
              US3047731A
              (en)
            
            *
            
           | 
          1958-07-14 | 
          1962-07-31 | 
          Smith Corona Marchant Inc | 
          Magnetic core circuit 
        | 
        
        
          | 
            
              US3089077A
              (en)
            
            *
            
           | 
          1958-10-06 | 
          1963-05-07 | 
          Basler Electric Co | 
          Transistor converters 
        | 
        
        
          | 
            
              NL247148A
              (browse.php)
            
            *
            
           | 
          1958-10-14 | 
           | 
           | 
           | 
        
        
          | 
            
              NL245105A
              (browse.php)
            
            *
            
           | 
          1958-11-07 | 
          1900-01-01 | 
           | 
           | 
        
        
          | 
            
              DE1110218B
              (de)
            
            *
            
           | 
          1958-11-08 | 
          1961-07-06 | 
          Telefunken Patent | 
          Bistabile Kippschaltung 
        | 
        
        
          | 
            
              US3193691A
              (en)
            
            *
            
           | 
          1959-12-23 | 
          1965-07-06 | 
          Ibm | 
          Driver circuit 
        | 
        
        
          | 
            
              US3067378A
              (en)
            
            *
            
           | 
          1960-03-17 | 
          1962-12-04 | 
          Gen Electric | 
          Transistor converter 
        | 
        
        
          | 
            
              US3079542A
              (en)
            
            *
            
           | 
          1960-03-29 | 
          1963-02-26 | 
          North Electric Co | 
          Current supply apparatus 
        | 
        
        
          | 
            
              US3076925A
              (en)
            
            *
            
           | 
          1960-03-29 | 
          1963-02-05 | 
          North Electric Co | 
          Current supply apparatus 
        | 
        
        
          | 
            
              US3135832A
              (en)
            
            *
            
           | 
          1960-12-20 | 
          1964-06-02 | 
          Electro Mechanical Res Inc | 
          Current transformer coupling means for time sequential switching of low level signals 
        | 
        
        
          | 
            
              US3157864A
              (en)
            
            *
            
           | 
          1961-01-09 | 
          1964-11-17 | 
          Gulton Ind Inc | 
          Controil for magnetic memory matrix 
        | 
        
        
          | 
            
              NL283544A
              (browse.php)
            
            *
            
           | 
          1961-09-29 | 
          1900-01-01 | 
           | 
           | 
        
        
          | 
            
              DE1172723B
              (de)
            
            *
            
           | 
          1962-03-07 | 
          1964-06-25 | 
          Telefunken Patent | 
          Bistabile Kippschaltung mit zwei Transistoren und einem Speicherkern, insbesondere zur Verwendung in elektronischen Speicher-schaltungen fuer die Pegelregelung in der Traegerfrequenz-Nachrichtentechnik 
        | 
        
        
          | 
            
              US3278918A
              (en)
            
            *
            
           | 
          1963-02-18 | 
          1966-10-11 | 
          Gen Signal Corp | 
          Binary counter 
        | 
        
        
          | 
            
              US3421024A
              (en)
            
            *
            
           | 
          1963-07-31 | 
          1969-01-07 | 
          Gen Time Corp | 
          Bistable magnetic device 
        | 
        
        
          | 
            
              US3683208A
              (en)
            
            *
            
           | 
          1970-12-23 | 
          1972-08-08 | 
          North Electric Co | 
          Power supply circuit arrangement utilizing regenerative current feedback 
        | 
        
        
          | 
            
              FR2279271A1
              (fr)
            
            *
            
           | 
          1973-12-14 | 
          1976-02-13 | 
          Alkan R & Cie | 
          Dispositif de memorisation d'un systeme de comptage par tores magnetiques 
        |