Name Size Creator Creation Date Labels Comment  
PDF File 1507178.pdf 474 kB Shaun Ewing Sept 02, 1924 00:00
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US-1507178-A // Method of and means for reducing interference in transmission systems // Hitchcock Harry W. // American Telephone & Telegraph
PDF File 1508424.pdf 439 kB Shaun Ewing Sept 16, 1924 00:00
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US-1508424-A // Telephone desk set // Thompson George K. // American Telephone & Telegraph
PDF File 1508425.pdf 661 kB Shaun Ewing Sept 16, 1924 00:00
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US-1508425-A // Telephone private branch exchange circuits // Toomey John F. ; Phelps Henry E. // American Telephone & Telegraph
PDF File 1509139.pdf 233 kB Shaun Ewing Sept 23, 1924 00:00
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US-1509139-A // Radio receiving apparatus // Grimes David // American Telephone & Telegraph
PDF File 1509184.pdf 802 kB Shaun Ewing Sept 23, 1924 00:00
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US-1509184-A // Multiple-band wave filter // Zobel Otto J. // American Telephone & Telegraph
PDF File 1509886.pdf 1.11 MB Shaun Ewing Sept 30, 1924 00:00
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US-1509886-A // Printing-telegraph system // Vernam Gilbert S. // American Telephone & Telegraph
PDF File 1509901.pdf 383 kB Shaun Ewing Sept 30, 1924 00:00
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US-1509901-A // Electrical measuring system // Nyquist Harry // American Telephone & Telegraph
PDF File 1510985.pdf 943 kB Shaun Ewing Oct 07, 1924 00:00
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US-1510985-A // Transmission regulation // Espenschied Lloyd // American Telephone & Telegraph
PDF File 1511013.pdf 1.77 MB Shaun Ewing Oct 07, 1924 00:00
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US-1511013-A // Equalization of carrier transmissions // Affel Herman A. // American Telephone & Telegraph
PDF File 1511014.pdf 760 kB Shaun Ewing Oct 07, 1924 00:00
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US-1511014-A // Transmission regulation // Affel Herman A. // American Telephone & Telegraph
PDF File 1511015.pdf 715 kB Shaun Ewing Oct 07, 1924 00:00
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US-1511015-A // Transmission regulation // Affel Herman A. // American Telephone & Telegraph
PDF File 1511326.pdf 553 kB Shaun Ewing Oct 14, 1924 00:00
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US-1511326-A // Duplex telegraphy // Fell John M. // American Telephone & Telegraph
PDF File 1511360.pdf 393 kB Shaun Ewing Oct 14, 1924 00:00
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US-1511360-A // Anti-inductive system // Osborne Harold S. // American Telephone & Telegraph
PDF File 1511629.pdf 577 kB Shaun Ewing Oct 14, 1924 00:00
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US-1511629-A // Electrical testing system // Nyquist Harry // American Telephone & Telegraph
PDF File 1511755.pdf 749 kB Shaun Ewing Oct 14, 1924 00:00
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US-1511755-A // Electrical testing system // Cory Samuel I. // American Telephone & Telegraph
PDF File 1511756.pdf 422 kB Shaun Ewing Oct 14, 1924 00:00
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US-1511756-A // Electrical testing system // Cory Samuel I. // American Telephone & Telegraph
PDF File 1512070.pdf 906 kB Shaun Ewing Oct 21, 1924 00:00
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US-1512070-A // Printing telegraphy // Vernam Gilbert S. // American Telephone & Telegraph
PDF File 1512087.pdf 240 kB Shaun Ewing Oct 21, 1924 00:00
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US-1512087-A // Buckle for safety straps // Fish Lewin B. // American Telephone & Telegraph
PDF File 1512930.pdf 418 kB Shaun Ewing Oct 28, 1924 00:00
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US-1512930-A // Signaling system // Hitchcock Harry W. // American Telephone & Telegraph
PDF File 1512953.pdf 380 kB Shaun Ewing Oct 28, 1924 00:00
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US-1512953-A // Arrangement for protecting electrical contacts // Shanck Roy B. // American Telephone & Telegraph
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