| US2831983A
              (en)
            
            * | 1952-06-11 | 1958-04-22 | Bell Telephone Labor Inc | Trigger circuit | 
        
          | NL191850A
              (forum.php)
            
            * | 1952-10-09 |  |  |  | 
        
          | US2876285A
              (en)
            
            * | 1953-02-02 | 1959-03-03 | Bell Telephone Labor Inc | Transistor switching network for communication system | 
        
          | NL105202C
              (forum.php)
            
            * | 1953-04-20 |  |  |  | 
        
          | US2827574A
              (en)
            
            * | 1953-08-24 | 1958-03-18 | Hoffman Electronics Corp | Multivibrators | 
        
          | US2919355A
              (en)
            
            * | 1953-12-31 | 1959-12-29 | Sylvania Electric Prod | Bi-stable transistor circuit | 
        
          | US2762921A
              (en)
            
            * | 1953-12-31 | 1956-09-11 | Ibm | Binary trigger circuit | 
        
          | US2906889A
              (en)
            
            * | 1953-12-31 | 1959-09-29 | Ibm | Binary trigger circuit employing single transistor | 
        
          | GB739880A
              (en)
            
            * | 1954-05-14 | 1955-11-02 | Mullard Radio Valve Co Ltd | Improvements in or relating to circuit arrangements for supplying alternating current to a utilization device | 
        
          | US2933620A
              (en)
            
            * | 1954-05-27 | 1960-04-19 | Sylvania Electric Prod | Two-input ring counters | 
        
          | NL195355A
              (forum.php)
            
            * | 1954-06-29 |  |  |  | 
        
          | US2843761A
              (en)
            
            * | 1954-07-29 | 1958-07-15 | Arthur W Carlson | High speed transistor flip-flops | 
        
          | US2880331A
              (en)
            
            * | 1954-09-30 | 1959-03-31 | Ibm | Time controlled signal discriminator circuit | 
        
          | USRE24678E
              (en)
            
            * | 1954-12-29 | 1959-08-11 |  | pinckaers | 
        
          | US2888579A
              (en)
            
            * | 1955-03-07 | 1959-05-26 | North American Aviation Inc | Transistor multivibrator | 
        
          | US2820143A
              (en)
            
            * | 1955-04-19 | 1958-01-14 | Hughes Aircraft Co | Transistor phase detector | 
        
          | US2888580A
              (en)
            
            * | 1955-05-02 | 1959-05-26 | North American Aviation Inc | Transistor multivibrator | 
        
          | US2905835A
              (en)
            
            * | 1955-05-27 | 1959-09-22 | Teletype Corp | Transistor relay and signal shaping device | 
        
          | US2827545A
              (en)
            
            * | 1955-05-27 | 1958-03-18 | Westinghouse Electric Corp | Control apparatus | 
        
          | BE549248A
              (forum.php)
            
            * | 1955-07-05 |  |  |  | 
        
          | US3113217A
              (en)
            
            * | 1955-08-03 | 1963-12-03 | Sylvania Electric Prod | Trigger circuits employing transistors of complementary characteristics | 
        
          | US2892100A
              (en)
            
            * | 1955-08-03 | 1959-06-23 | Sylvania Electric Prod | Power transistor switching circuits | 
        
          | US2916637A
              (en)
            
            * | 1955-08-09 | 1959-12-08 | Thompson Ramo Wooldridge Inc | Multivibrator circuits with improved power-frequency capacity | 
        
          | US2916636A
              (en)
            
            * | 1955-08-09 | 1959-12-08 | Thompson Ramo Wooldridge Inc | Current feedback multivibrator utilizing transistors | 
        
          | US2897353A
              (en)
            
            * | 1955-10-20 | 1959-07-28 | Philco Corp | Non-linear device varying impedance match between antenna and radio frequency stages | 
        
          | US2986649A
              (en)
            
            * | 1955-10-25 | 1961-05-30 | Teletype Corp | Transistor multivibrator circuits | 
        
          | US2903606A
              (en)
            
            * | 1955-11-18 | 1959-09-08 | Hughes Aircraft Co | Logical decision circuitry for digital computation | 
        
          | US2954484A
              (en)
            
            * | 1956-02-13 | 1960-09-27 | Gen Precision Inc | Direct coupled transistor flip-flop | 
        
          | US2921192A
              (en)
            
            * | 1956-03-12 | 1960-01-12 | Monroe Calculating Machine | Flip-flop | 
        
          | US3087070A
              (en)
            
            * | 1956-03-21 | 1963-04-23 | Nat Res Dev | Electronic storage and switching arrangements | 
        
          | US2918587A
              (en)
            
            * | 1956-04-02 | 1959-12-22 | Hughes Aircraft Co | Clock-pulse insertion circuit | 
        
          | US2814736A
              (en)
            
            * | 1956-05-14 | 1957-11-26 | Hughes Aircraft Co | Linear saw-tooth wave generator | 
        
          | US2892102A
              (en)
            
            * | 1956-06-22 | 1959-06-23 | Westinghouse Electric Corp | Frequency halver | 
        
          | US2951950A
              (en)
            
            * | 1956-09-04 | 1960-09-06 | Ibm | Variable pulse width control | 
        
          | US2976427A
              (en)
            
            * | 1956-09-27 | 1961-03-21 | North American Aviation Inc | Transistor multivibrator | 
        
          | DE1047839B
              (de)
            
            * | 1956-10-09 | 1958-12-31 | Philips Nv | Bistabile Kippschaltung mit zwei Transistoren des stromverstaerkenden Typs | 
        
          | US2934659A
              (en)
            
            * | 1956-11-16 | 1960-04-26 | Bell Telephone Labor Inc | Monostable trigger circuit | 
        
          | US2970226A
              (en)
            
            * | 1956-11-20 | 1961-01-31 | Texas Instruments Inc | Electronic timing device | 
        
          | BE563126A
              (forum.php)
            
            * | 1956-12-14 |  |  |  | 
        
          | US2992340A
              (en)
            
            * | 1956-12-21 | 1961-07-11 | Hughes Aircraft Co | Amplitude discriminating system | 
        
          | US2916638A
              (en)
            
            * | 1956-12-28 | 1959-12-08 | Burroughs Corp | High speed complementing flip flop | 
        
          | DE1065874B
              (forum.php)
            
            * | 1957-03-22 |  |  |  | 
        
          | US2947882A
              (en)
            
            * | 1957-12-30 | 1960-08-02 | Ibm | Transistor trigger circuits | 
        
          | US2977540A
              (en)
            
            * | 1958-03-10 | 1961-03-28 | Gen Radio Co | Electric switching circuits | 
        
          | NL248046A
              (forum.php)
            
            * | 1958-07-31 |  |  |  | 
        
          | US3042812A
              (en)
            
            * | 1958-08-05 | 1962-07-03 | Sperry Rand Corp | Multivibrators with particular input circuits | 
        
          | US3041477A
              (en)
            
            * | 1958-08-08 | 1962-06-26 | Budts Lucien | Multivibrator circuit arrangement | 
        
          | US2982869A
              (en)
            
            * | 1959-02-25 | 1961-05-02 | Bell Telephone Labor Inc | Semiconductor trigger circuit | 
        
          | US3152263A
              (en)
            
            * | 1959-04-30 | 1964-10-06 | Gen Electric | Semiconductor logic circuit with voltage dividing base channels | 
        
          | GB962680A
              (en)
            
            * | 1961-04-08 | 1964-07-01 | Sony Corp | A transistor logic circuit element | 
        
          | US3307045A
              (en)
            
            * | 1964-03-04 | 1967-02-28 | Burroughs Corp | Transformer control circuits for flip-flops |