Name Size Creator Creation Date Labels Comment  
PDF File 1133750.pdf 281 kB Shaun Ewing Mar 30, 1915 00:00
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US-1133750-A // Transformer. // Thomas Shaw // American Telephone & Telegraph
PDF File 1126956.pdf 314 kB Shaun Ewing Feb 02, 1915 00:00
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US-1126956-A // Method of and means for equalizing the potentials of grounding-points. // Alva B. Clark // American Telephone & Telegraph
PDF File 1125954.pdf 1.57 MB Shaun Ewing Jan 26, 1915 00:00
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US-1125954-A // Telephone-exchange system. // Sidney Hand Browne // American Telephone & Telegraph
PDF File 1124904.pdf 550 kB Shaun Ewing Jan 12, 1915 00:00
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US-1124904-A // Artificial line. // Ray S. Hoyt // American Telephone & Telegraph
PDF File 1114725.pdf 553 kB Shaun Ewing Oct 27, 1914 00:00
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US-1114725-A // Means for determining time intervals in telephone systems. // William G. Blauvelt // American Telephone & Telegraph
PDF File 1114174.pdf 1.59 MB Shaun Ewing Oct 20, 1914 00:00
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US-1114174-A // Controlling apparatus for telephone switching systems. // Edward C. Molina // American Telephone & Telegraph
PDF File 1104956.pdf 952 kB Shaun Ewing Jul 28, 1914 00:00
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US-1104956-A // Telephone-operator's equipment. // William G. Blauvelt ; Edward C. Molina // American Telephone & Telegraph
PDF File 1103421.pdf 363 kB Shaun Ewing Jul 14, 1914 00:00
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US-1103421-A // Cable telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1103130.pdf 381 kB Shaun Ewing Jul 14, 1914 00:00
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US-1103130-A // Connection for coil-cases and cables. // James Cunningham ; William H. Horner // American Telephone & Telegraph
PDF File 1103079.pdf 296 kB Shaun Ewing Jul 14, 1914 00:00
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US-1103079-A // Coil-cases for insertion in cables. // Frederick L. Rhodes // American Telephone & Telegraph
PDF File 1103073.pdf 217 kB Shaun Ewing Jul 14, 1914 00:00
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US-1103073-A // Emergency signaling system for telephone toll-collecting apparatus. // Joseph J. O'Connell // American Telephone & Telegraph
PDF File 1102907.pdf 2.89 MB Shaun Ewing Jul 07, 1914 00:00
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US-1102907-A // Telephone central switching system. // Ernest A. Gray ; Edward C. Molina // American Telephone & Telegraph
PDF File 1100018.pdf 258 kB Shaun Ewing Jun 16, 1914 00:00
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US-1100018-A // Case for loading coils. // Frank B. Jewett ; Thomas Shaw // American Telephone & Telegraph
PDF File 1099380.pdf 562 kB Shaun Ewing Jun 09, 1914 00:00
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US-1099380-A // Cable-telegraph system. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1097030.pdf 609 kB Shaun Ewing May 19, 1914 00:00
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US-1097030-A // Cable telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1096175.pdf 197 kB Shaun Ewing May 12, 1914 00:00
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US-1096175-A // Electric transmission of intelligence. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1095329.pdf 217 kB Shaun Ewing May 05, 1914 00:00
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US-1095329-A // Cable telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1094578.pdf 275 kB Shaun Ewing Apr 28, 1914 00:00
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US-1094578-A // Duplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1093702.pdf 539 kB Shaun Ewing Apr 21, 1914 00:00
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US-1093702-A // Relay. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1093001.pdf 249 kB Shaun Ewing Apr 14, 1914 00:00
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US-1093001-A // Telegraphy. // Isidor Kitsee // American Telephone & Telegraph
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