Name Size Creator Creation Date Labels Comment  
PDF File 1502816.pdf 477 kB Shaun Ewing Jul 29, 1924 00:00
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US-1502816-A // High-frequency multiplex signaling system // Espenschied Lloyd // American Telephone & Telegraph
PDF File 1502815.pdf 558 kB Shaun Ewing Jul 29, 1924 00:00
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US-1502815-A // High-frequency multiplex signaling system // Espenschied Lloyd // American Telephone & Telegraph
PDF File 1502813.pdf 851 kB Shaun Ewing Jul 29, 1924 00:00
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US-1502813-A // High-frequency multiplex signaling system // Espenschied Lloyd // American Telephone & Telegraph
PDF File 1502812.pdf 647 kB Shaun Ewing Jul 29, 1924 00:00
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US-1502812-A // High-frequency multiplex signaling system // Espenschied Lloyd // American Telephone & Telegraph
PDF File 1501959.pdf 1.39 MB Shaun Ewing Jul 22, 1924 00:00
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US-1501959-A // Loaded transmission circuits // Martin William H. ; Shaw Thomas // American Telephone & Telegraph
PDF File 1501926.pdf 817 kB Shaun Ewing Jul 22, 1924 00:00
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US-1501926-A // Loaded transmission circuit // Shaw Thomas // American Telephone & Telegraph
PDF File 1501104.pdf 628 kB Shaun Ewing Jul 15, 1924 00:00
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US-1501104-A // Multiplex radio system // Espenschied Lloyd // American Telephone & Telegraph
PDF File 1501103.pdf 416 kB Shaun Ewing Jul 15, 1924 00:00
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US-1501103-A // Conjugate signaling circuits // Espenschied Lloyd // American Telephone & Telegraph
PDF File 1500553.pdf 339 kB Shaun Ewing Jul 08, 1924 00:00
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US-1500553-A // Harmonic suppressor // Espenschied Lloyd // American Telephone & Telegraph
PDF File 1500552.pdf 1.51 MB Shaun Ewing Jul 08, 1924 00:00
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US-1500552-A // Multiplex transmission system // Espenschied Lloyd // American Telephone & Telegraph
PDF File 1499464.pdf 968 kB Shaun Ewing Jul 01, 1924 00:00
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US-1499464-A // Transmission-regulating circuits // Loynes Owen H. // American Telephone & Telegraph
PDF File 1499438.pdf 359 kB Shaun Ewing Jul 01, 1924 00:00
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US-1499438-A // System of communication with moving vehicles // Affel Herman A. // American Telephone & Telegraph
PDF File 1498915.pdf 770 kB Shaun Ewing Jun 24, 1924 00:00
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US-1498915-A // Artificial line // Hoyt Ray S. // American Telephone & Telegraph
PDF File 1498592.pdf 1.04 MB Shaun Ewing Jun 24, 1924 00:00
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US-1498592-A // Telephone system // Toomey John F. ; Loynes Owen H. // American Telephone & Telegraph
PDF File 1498568.pdf 896 kB Shaun Ewing Jun 24, 1924 00:00
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US-1498568-A // Equalization of carrier transmissions // Osborne Harold S. // American Telephone & Telegraph
PDF File 1497714.pdf 262 kB Shaun Ewing Jun 17, 1924 00:00
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US-1497714-A // Secret-communication system // Espenschied Lloyd // American Telephone & Telegraph
PDF File 1496848.pdf 522 kB Shaun Ewing Jun 10, 1924 00:00
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US-1496848-A // Selective-signaling system // Holden William H.t. // American Telephone & Telegraph
PDF File 1496847.pdf 653 kB Shaun Ewing Jun 10, 1924 00:00
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US-1496847-A // Telephone-exchange system // Hoffmann Henry L. // American Telephone & Telegraph
PDF File 1496014.pdf 449 kB Shaun Ewing Jun 03, 1924 00:00
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US-1496014-A // Multichannel circuits // Osborne Harold S. // American Telephone & Telegraph
PDF File 1495226.pdf 272 kB Shaun Ewing May 27, 1924 00:00
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US-1495226-A // Detecting circuits // Hamilton Baxter P. // American Telephone & Telegraph
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