Name Size Creator Creation Date Labels Comment  
PDF File 1155672.pdf 2.04 MB Shaun Ewing Oct 05, 1915 00:00
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US-1155672-A // Telephone-exchange system. // Talbot G. Martin // Automatic Electric Co
PDF File 1151796.pdf 373 kB Shaun Ewing Aug 31, 1915 00:00
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US-1151796-A // Relay. // Alexander E. Keith // Automatic Electric Co
PDF File 1151543.pdf 2.68 MB Shaun Ewing Aug 24, 1915 00:00
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US-1151543-A // Telephone-exchange trunking system. // Alexander E. Keith // Automatic Electric Co
PDF File 1146821.pdf 2.15 MB Shaun Ewing Jul 20, 1915 00:00
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US-1146821-A // Semi-automatic telephone system. // Michael Schwartz // Automatic Electric Co
PDF File 1146786.pdf 2.09 MB Shaun Ewing Jul 20, 1915 00:00
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US-1146786-A // Telephone system. // Bethuel M. Davis // Automatic Electric Co
PDF File 1145544.pdf 1.04 MB Shaun Ewing Jul 06, 1915 00:00
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US-1145544-A // Impulse-transmitting device. // John G. Blessing // Automatic Electric Co
PDF File 1145543.pdf 1.67 MB Shaun Ewing Jul 06, 1915 00:00
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US-1145543-A // Impulse-transmitting device. // John G. Blessing // Automatic Electric Co
PDF File 1144745.pdf 219 kB Shaun Ewing Jun 29, 1915 00:00
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US-1144745-A // Relay. // Samuel E. Witt // Automatic Electric Co
PDF File 1143820.pdf 2.54 MB Shaun Ewing Jun 22, 1915 00:00
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US-1143820-A // Telephone trunking system. // Edward D. Fales // Automatic Electric Co
PDF File 1136912.pdf 2.07 MB Shaun Ewing Apr 20, 1915 00:00
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US-1136912-A // Telephone repeater system. // Talbot G. Martin // Automatic Electric Co
PDF File 1134978.pdf 3.07 MB Shaun Ewing Apr 06, 1915 00:00
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US-1134978-A // Semi-automatic telephone-exchange trunking system. // Edward A. Mellinger // Automatic Electric Co
PDF File 1134933.pdf 1.03 MB Shaun Ewing Apr 06, 1915 00:00
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US-1134933-A // Telephone switching apparatus. // Bernard D. Willis // Automatic Electric Co
PDF File 1133796.pdf 681 kB Shaun Ewing Mar 30, 1915 00:00
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US-1133796-A // Telephone-exchange-system impulse-transmitter. // John Erickson // Automatic Electric Co
PDF File 1130784.pdf 2.24 MB Shaun Ewing Mar 09, 1915 00:00
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US-1130784-A // Measured-service telephone system. // Bernard D. Willis // Automatic Electric Co
PDF File 1122556.pdf 1.91 MB Shaun Ewing Dec 29, 1914 00:00
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US-1122556-A // Automatic trunking system. // Franklin J. Truby // Automatic Electric Co
PDF File 1119394.pdf 1.66 MB Shaun Ewing Dec 01, 1914 00:00
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US-1119394-A // Telephone system. // John G. Blessing // Automatic Electric Co
PDF File 1118926.pdf 461 kB Shaun Ewing Dec 01, 1914 00:00
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US-1118926-A // Telephone-system receiver. // John Erickson // Automatic Electric Co
PDF File 1118925.pdf 353 kB Shaun Ewing Dec 01, 1914 00:00
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US-1118925-A // Harmonic ringer. // John Erickson // Automatic Electric Co
PDF File 1115324.pdf 975 kB Shaun Ewing Oct 27, 1914 00:00
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US-1115324-A // Telephone release-insuring means. // Talbot G. Martin // Automatic Electric Co
PDF File 1113937.pdf 862 kB Shaun Ewing Oct 13, 1914 00:00
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US-1113937-A // Telephone-testing system. // Edward A. Mellinger // Automatic Electric Co
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