| 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
              (OSRAM)
            
            * | 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
              (OSRAM)
            
            * | 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
              (OSRAM)
            
            * | 1956-06-05 |  |  |  | 
        
          | NL218614A
              (OSRAM)
            
            * | 1956-07-02 |  |  |  | 
        
          | US2849624A
              (en)
            
            * | 1956-08-31 | 1958-08-26 | Richard L Snyder | Saturable reactance circuits | 
        
          | NL220446A
              (OSRAM)
            
            * | 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
              (OSRAM)
            
            * | 1956-12-03 |  |  |  | 
        
          | US2941090A
              (en)
            
            * | 1957-01-31 | 1960-06-14 | Rca Corp | Signal-responsive circuits | 
        
          | NL98358C
              (OSRAM)
            
            * | 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
              (OSRAM)
            
            * | 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
              (OSRAM)
            
            * | 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
              (OSRAM)
            
            * | 1958-10-14 |  |  |  | 
        
          | NL245105A
              (OSRAM)
            
            * | 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
              (OSRAM)
            
            * | 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 |