Name Size Creator Creation Date Labels Comment  
PDF File 2522402.pdf 374 kB Shaun Ewing Sept 12, 1950 00:00
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US-2522402-A // Negative resistance repeater system // Robertson Sloan D. // Bell Telephone Labor Inc
PDF File 2522395.pdf 567 kB Shaun Ewing Sept 12, 1950 00:00
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US-2522395-A // Electric wave transmission // Ohl Russell S. // Bell Telephone Labor Inc
PDF File 2522389.pdf 1.05 MB Shaun Ewing Sept 12, 1950 00:00
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US-2522389-A // Electric power source // Mason Warren P. // Bell Telephone Labor Inc
PDF File 2522362.pdf 1021 kB Shaun Ewing Sept 12, 1950 00:00
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US-2522362-A // Cable testing method by transmitting pulses of different rates of propagation // Gilbert John J. // Bell Telephone Labor Inc
PDF File 2522291.pdf 1.00 MB Shaun Ewing Sept 12, 1950 00:00
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US-2522291-A // Cathode-ray tube with target controlled deflecting plates // Marrison Warren A. // Bell Telephone Labor Inc
PDF File 2522279.pdf 326 kB Shaun Ewing Sept 12, 1950 00:00
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US-2522279-A // Wave guide coupling // Koller Fredrick W. ; Ley Edmund // Bell Telephone Labor Inc
PDF File 2522259.pdf 752 kB Shaun Ewing Sept 12, 1950 00:00
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US-2522259-A // Electrode temperature regulation // Fay Clifford E. // Bell Telephone Labor Inc
PDF File 2522151.pdf 325 kB Shaun Ewing Sept 12, 1950 00:00
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US-2522151-A // Circuit for testing the dielectric strength of insulating material and recording puncture points // Jr. John R. Weeks, // Bell Telephone Labor Inc
PDF File 2522130.pdf 741 kB Shaun Ewing Sept 12, 1950 00:00
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US-2522130-A // Carrier telegraph receiving circuit // Pfleger Kenneth W. // Bell Telephone Labor Inc
PDF File 2522125.pdf 679 kB Shaun Ewing Sept 12, 1950 00:00
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US-2522125-A // Antenna driving mechanism // Kock Winston E. // Bell Telephone Labor Inc
PDF File 2522124.pdf 798 kB Shaun Ewing Sept 12, 1950 00:00
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US-2522124-A // Frequency-controlled oscillator // Klute Walter A. // Bell Telephone Labor Inc
PDF File 2521545.pdf 552 kB Shaun Ewing Sept 05, 1950 00:00
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US-2521545-A // Electron discharge device // Shepherd William G. // Bell Telephone Labor Inc
PDF File 2521524.pdf 638 kB Shaun Ewing Sept 05, 1950 00:00
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US-2521524-A // Directional antenna system // Kock Winston E. // Bell Telephone Labor Inc
PDF File 2521507.pdf 939 kB Shaun Ewing Sept 05, 1950 00:00
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US-2521507-A // Regulator circuit // Dysart Birney // Bell Telephone Labor Inc
PDF File 2521125.pdf 564 kB Shaun Ewing Sept 05, 1950 00:00
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US-2521125-A // Wave transmission network // Oliver Bernard M. // Bell Telephone Labor Inc
PDF File 2521116.pdf 671 kB Shaun Ewing Sept 05, 1950 00:00
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US-2521116-A // Wave translating device // Jr. Stephen Doba, // Bell Telephone Labor Inc
PDF File 2521114.pdf 506 kB Shaun Ewing Sept 05, 1950 00:00
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US-2521114-A // Combined lock and spreader for portable rolling ladders // Campbell Thaddeus C. // Bell Telephone Labor Inc
PDF File 2520962.pdf 1.66 MB Shaun Ewing Sept 05, 1950 00:00
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US-2520962-A // System for automatically ticketing telephone calls // Retallack John B. // Bell Telephone Labor Inc
PDF File 2520646.pdf 450 kB Shaun Ewing Aug 29, 1950 00:00
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US-2520646-A // Electroacoustic transducer // Mott Edward E. // Bell Telephone Labor Inc
PDF File 2520640.pdf 479 kB Shaun Ewing Aug 29, 1950 00:00
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US-2520640-A // Electroacoustic transducer // Kreisel Ralph R. // Bell Telephone Labor Inc
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