Name Size Creator Creation Date Labels Comment  
PDF File 2371613.pdf 1.32 MB Shaun Ewing Mar 20, 1945 00:00
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US-2371613-A // Piezoelectric crystal apparatus // Fair Irvin E. // Bell Telephone Labor Inc
PDF File 2370736.pdf 3.29 MB Shaun Ewing Mar 06, 1945 00:00
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US-2370736-A // Telephone system // Kittredge Linus E. // Bell Telephone Labor Inc
PDF File 2370727.pdf 584 kB Shaun Ewing Mar 06, 1945 00:00
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US-2370727-A // Time measuring system // Holden William H. T. // Bell Telephone Labor Inc
PDF File 2370712.pdf 4.23 MB Shaun Ewing Mar 06, 1945 00:00
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US-2370712-A // Automatic toll ticketing system // Busch Aloysius J. // Bell Telephone Labor Inc
PDF File 2370685.pdf 2.82 MB Shaun Ewing Mar 06, 1945 00:00
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US-2370685-A // Electrical timing circuit // Rea Wilton T. ; Wilkerson Jefferson R. // Bell Telephone Labor Inc
PDF File 2370403.pdf 650 kB Shaun Ewing Feb 27, 1945 00:00
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US-2370403-A // Telephone system // Hecht George // Bell Telephone Labor Inc
PDF File 2370385.pdf 701 kB Shaun Ewing Feb 27, 1945 00:00
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US-2370385-A // Method of acoustic measurement and apparatus therefor // Abraham Leonard G. ; Mitchell Doren // Bell Telephone Labor Inc
PDF File 2370264.pdf 692 kB Shaun Ewing Feb 27, 1945 00:00
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US-2370264-A // Telephone call transmitter // Shann Oscar A. // Bell Telephone Labor Inc
PDF File 2370239.pdf 894 kB Shaun Ewing Feb 27, 1945 00:00
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US-2370239-A // Special service telephone system // Friend Otto A. // Bell Telephone Labor Inc
PDF File 2370221.pdf 433 kB Shaun Ewing Feb 27, 1945 00:00
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US-2370221-A // Electric wave circuits // Barney Harold L. // Bell Telephone Labor Inc
PDF File 2370203.pdf 140 kB Shaun Ewing Feb 27, 1945 00:00
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US-2370203-A // Sealed reed contact unit // Stubner Franz W. // Bell Telephone Labor Inc
PDF File 2369935.pdf 698 kB Shaun Ewing Feb 20, 1945 00:00
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US-2369935-A // Automatic telegraph transmitter system // Bacon Walter M. // Bell Telephone Labor Inc
PDF File 2369663.pdf 707 kB Shaun Ewing Feb 20, 1945 00:00
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US-2369663-A // Synchronizing system // Dennis Fred R. ; Jr. Edwin P. Felch, // Bell Telephone Labor Inc
PDF File 2369619.pdf 345 kB Shaun Ewing Feb 13, 1945 00:00
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US-2369619-A // Relay testing system // Stibitz George R. // Bell Telephone Labor Inc
PDF File 2369616.pdf 373 kB Shaun Ewing Feb 13, 1945 00:00
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US-2369616-A // Contacting device // Jr. Charles F. Spahn, // Bell Telephone Labor Inc
PDF File 2369578.pdf 2.94 MB Shaun Ewing Feb 13, 1945 00:00
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US-2369578-A // Telegraph station selector system // Kinkead Fullerton S. ; Krecek Joseph A. // Bell Telephone Labor Inc
PDF File 2369569.pdf 693 kB Shaun Ewing Feb 13, 1945 00:00
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US-2369569-A // Electron camera tube // Hulbert Arthur D. // Bell Telephone Labor Inc
PDF File 2369561.pdf 455 kB Shaun Ewing Feb 13, 1945 00:00
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US-2369561-A // Coating apparatus // Grisdale Richard O. // Bell Telephone Labor Inc
PDF File 2369070.pdf 1.14 MB Shaun Ewing Feb 06, 1945 00:00
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US-2369070-A // Signal for electric bridge measurements // Nielsen John E. // Bell Telephone Labor Inc
PDF File 2369062.pdf 1.79 MB Shaun Ewing Feb 06, 1945 00:00
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US-2369062-A // Automatic toll ticketing system // Mcdavitt Marcellus B. // Bell Telephone Labor Inc
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