Name Size Creator Creation Date Labels Comment  
PDF File 1926877.pdf 199 kB Shaun Ewing Sept 12, 1933 00:00
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US-1926877-A // Transmission network // Marrison Warren A. // Bell Telephone Labor Inc
PDF File 1926880.pdf 1.82 MB Shaun Ewing Sept 12, 1933 00:00
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US-1926880-A // Transmission control in two-way signaling systems // Norwine Andrew C. // Bell Telephone Labor Inc
PDF File 1926889.pdf 410 kB Shaun Ewing Sept 12, 1933 00:00
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US-1926889-A // Glow discharge device // Weinhart Howard W. // Bell Telephone Labor Inc
PDF File 1926894.pdf 2.91 MB Shaun Ewing Sept 12, 1933 00:00
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US-1926894-A // Selector testing system // Dehn Joseph W. // Bell Telephone Labor Inc
PDF File 1926899.pdf 382 kB Shaun Ewing Sept 12, 1933 00:00
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US-1926899-A // Submarine communication cable // Gilbert John J. // Bell Telephone Labor Inc
PDF File 1927070.pdf 537 kB Shaun Ewing Sept 19, 1933 00:00
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US-1927070-A // Distortion correction in wave transmission systems // Peterson Eugene // Bell Telephone Labor Inc
PDF File 1927082.pdf 272 kB Shaun Ewing Sept 19, 1933 00:00
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US-1927082-A // Amplifier // Corbin Joseph E. // Bell Telephone Labor Inc
PDF File 1927084.pdf 665 kB Shaun Ewing Sept 19, 1933 00:00
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US-1927084-A // Support for filament assemblies // Depew Charles // Bell Telephone Labor Inc
PDF File 1927099.pdf 332 kB Shaun Ewing Sept 19, 1933 00:00
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US-1927099-A // Vacuum tube circuits // Shower Edmund G. // Bell Telephone Labor Inc
PDF File 1927400.pdf 467 kB Shaun Ewing Sept 19, 1933 00:00
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US-1927400-A // Method of applying and vulcanizing an insulating compound // Gray Alvin N. ; Kemp Archie R. // Bell Telephone Labor Inc
PDF File 1929446.pdf 257 kB Shaun Ewing Oct 10, 1933 00:00
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US-1929446-A // Resistance device // Ogg Robert A. // Bell Telephone Labor Inc
PDF File 1929925.pdf 386 kB Shaun Ewing Oct 10, 1933 00:00
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US-1929925-A // Multiple terminal bank // Kuhn John J. // Bell Telephone Labor Inc
PDF File 1930255.pdf 3.81 MB Shaun Ewing Oct 10, 1933 00:00
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US-1930255-A // Telephone system // Smith Gerard V. // Bell Telephone Labor Inc
PDF File 1930264.pdf 344 kB Shaun Ewing Oct 10, 1933 00:00
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US-1930264-A // Electric current interrupter // Curtis Austen M. // Bell Telephone Labor Inc
PDF File 1930267.pdf 448 kB Shaun Ewing Oct 10, 1933 00:00
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US-1930267-A // Testing and adjusting device // Gibson Robert D. ; Harley John B. // Bell Telephone Labor Inc
PDF File 1930269.pdf 555 kB Shaun Ewing Oct 10, 1933 00:00
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US-1930269-A // Inductance device // Greenidge Ralph M. C. // Bell Telephone Labor Inc
PDF File 1930270.pdf 685 kB Shaun Ewing Oct 10, 1933 00:00
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US-1930270-A // Portable telephone set // Hayward John M. // Bell Telephone Labor Inc
PDF File 1930274.pdf 337 kB Shaun Ewing Oct 10, 1933 00:00
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US-1930274-A // Insulating compound // Kemp Archie R. ; Ingmanson John H. // Bell Telephone Labor Inc
PDF File 1930275.pdf 491 kB Shaun Ewing Oct 10, 1933 00:00
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US-1930275-A // Telephone switchboard // Knowlton Alfred D. ; Gilmore Alfred C. // Bell Telephone Labor Inc
PDF File 1930278.pdf 587 kB Shaun Ewing Oct 10, 1933 00:00
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US-1930278-A // Oscillation generator // Marrison Warren A. // Bell Telephone Labor Inc
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