| BE447471A
              (forum.php)
            
            * | 1942-02-19 |  |  |  | 
        
          | US2426250A
              (en)
            
            * | 1943-05-21 | 1947-08-26 | Allis Chalmers Mfg Co | Gas blast circuit breaker | 
        
          | US2428575A
              (en)
            
            * | 1943-07-10 | 1947-10-07 | Westinghouse Electric Corp | Circuit interrupter | 
        
          | BE477586A
              (forum.php)
            
            * | 1943-07-17 |  |  |  | 
        
          | GB570496A
              (en)
            
            * | 1943-08-09 | 1945-07-10 | British Thomson Houston Co Ltd | Improvements in gas blast electric circuit breakers | 
        
          | US2470628A
              (en)
            
            * | 1944-05-24 | 1949-05-17 | Westinghouse Electric Corp | Circuit interrupter | 
        
          | US2439952A
              (en)
            
            * | 1944-08-31 | 1948-04-20 | Westinghouse Electric Corp | Circuit interrupter | 
        
          | US2444765A
              (en)
            
            * | 1944-12-27 | 1948-07-06 | Gen Electric | Electric circuit breaker | 
        
          | US2558757A
              (en)
            
            * | 1947-07-19 | 1951-07-03 | Allis Chalmers Mfg Co | Multibreak gas blast circuit breaker with grounded operating motor | 
        
          | US2627005A
              (en)
            
            * | 1949-02-03 | 1953-01-27 | Westinghouse Electric Corp | Interrupter part of compressed-air breakers | 
        
          | CH337908A
              (de)
            
            * | 1955-04-14 | 1959-04-30 | Bbc Brown Boveri & Cie | Druckluftschalter mit Hilfsunterbrechungsstelle für Parallelwiderstände | 
        
          | US2997563A
              (en)
            
            * | 1955-05-27 | 1961-08-22 | Westinghouse Canada Ltd | Circuit interrupters | 
        
          | US2965735A
              (en)
            
            * | 1956-06-07 | 1960-12-20 | Westinghouse Electric Corp | Compressed-gas circuit interrupter | 
        
          | US2905793A
              (en)
            
            * | 1957-06-21 | 1959-09-22 | Ite Circuit Breaker Ltd | Differential piston for recirculating gas blast interrupters | 
        
          | US2911507A
              (en)
            
            * | 1957-06-21 | 1959-11-03 | Ite Circuit Breaker Ltd | Recirculating gas blast interrupter | 
        
          | GB960402A
              (en)
            
            * | 1959-06-02 | 1964-06-10 | English Electric Co Ltd | Improvements in or relating to electric circuit-breakers | 
        
          | DE1168996B
              (de)
            
            * | 1961-03-27 | 1964-04-30 | Westinghouse Electric Corp | Druckgasschalter mit Filter | 
        
          | US3134876A
              (en)
            
            * | 1961-10-02 | 1964-05-26 | Gen Electric | Gas blast circuit breaker with noisereducing exhaust muffler assembly | 
        
          | US3214553A
              (en)
            
            * | 1964-07-09 | 1965-10-26 | Westinghouse Electric Corp | Gas-blast circuit interrupters with closed recirculating system having gas filtering means | 
        
          | US3309482A
              (en)
            
            * | 1965-11-22 | 1967-03-14 | Westinghouse Electric Corp | Recirculating-type gas-blast doublebreak circuit interrupter with filtering housing surrounding intermediate contact |