Name Size Creator Creation Date Labels Comment  
PDF File 1221870.pdf 520 kB Shaun Ewing Apr 10, 1917 00:00
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US-1221870-A // Telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1221547.pdf 547 kB Shaun Ewing Apr 03, 1917 00:00
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US-1221547-A // Telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1221188.pdf 909 kB Shaun Ewing Apr 03, 1917 00:00
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US-1221188-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1220756.pdf 749 kB Shaun Ewing Mar 27, 1917 00:00
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US-1220756-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1220238.pdf 873 kB Shaun Ewing Mar 27, 1917 00:00
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US-1220238-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1219955.pdf 1000 kB Shaun Ewing Mar 20, 1917 00:00
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US-1219955-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1219760.pdf 400 kB Shaun Ewing Mar 20, 1917 00:00
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US-1219760-A // Method of and means for correcting loading-section irregularities in transmission-lines. // John Mills ; Ray S. Hoyt // American Telephone & Telegraph
PDF File 1219727.pdf 1.44 MB Shaun Ewing Mar 20, 1917 00:00
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US-1219727-A // Telephone repeating system. // Elwood Grissinger // American Telephone & Telegraph
PDF File 1219561.pdf 754 kB Shaun Ewing Mar 20, 1917 00:00
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US-1219561-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1219110.pdf 1.05 MB Shaun Ewing Mar 13, 1917 00:00
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US-1219110-A // Method of and means for quadruplexing cables. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1218870.pdf 191 kB Shaun Ewing Mar 13, 1917 00:00
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US-1218870-A // Duplexing telegraphic lines. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1218413.pdf 691 kB Shaun Ewing Mar 06, 1917 00:00
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US-1218413-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1218274.pdf 916 kB Shaun Ewing Mar 06, 1917 00:00
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US-1218274-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1215406.pdf 176 kB Shaun Ewing Feb 13, 1917 00:00
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US-1215406-A // Cutting-tool. // Frans Persson // American Telephone & Telegraph
PDF File 1215331.pdf 466 kB Shaun Ewing Feb 13, 1917 00:00
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US-1215331-A // Telephone toll system. // Henry M. Bascom // American Telephone & Telegraph
PDF File 1211274.pdf 579 kB Shaun Ewing Jan 02, 1917 00:00
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US-1211274-A // Party-line signaling system. // Henry M. Bascom // American Telephone & Telegraph
PDF File 1211044.pdf 380 kB Shaun Ewing Jan 02, 1917 00:00
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US-1211044-A // Signaling system. // Henry M. Bascom // American Telephone & Telegraph
PDF File 1210314.pdf 478 kB Shaun Ewing Dec 26, 1916 00:00
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US-1210314-A // Telephone toll system. // Alfred U. Hoefer ; Henry M. Bascom // American Telephone & Telegraph
PDF File 1207836.pdf 348 kB Shaun Ewing Dec 12, 1916 00:00
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US-1207836-A // Connecting system for telephone-stations. // Leon D. Barrows // American Telephone & Telegraph
PDF File 1207447.pdf 306 kB Shaun Ewing Dec 05, 1916 00:00
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US-1207447-A // Cable-lubricating wheel. // Wallace M. Van Deusen ; Frans Persson // American Telephone & Telegraph
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