Name Size Creator Creation Date Labels Comment  
PDF File 1283413.pdf 4.44 MB Shaun Ewing Oct 29, 1918 00:00
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US-1283413-A // Telephone-exchange system. // Alexander E. Keith // Automatic Electric Co
PDF File 1284242.pdf 1.34 MB Shaun Ewing Nov 12, 1918 00:00
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US-1284242-A // Semi-automatic telephone system. // George A. Yanochowski // Automatic Electric Co
PDF File 1284924.pdf 1.27 MB Shaun Ewing Nov 12, 1918 00:00
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US-1284924-A // Automatic party-line telephone system. // Arthur L. Piper // Automatic Electric Co
PDF File 1286966.pdf 1.19 MB Shaun Ewing Dec 10, 1918 00:00
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US-1286966-A // Telephone-meter-service system. // John Erikson // Automatic Electric Co
PDF File 1287079.pdf 3.51 MB Shaun Ewing Dec 10, 1918 00:00
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US-1287079-A // Automatic telephone system. // Frank Newforth // Automatic Electric Co
PDF File 1288098.pdf 1.98 MB Shaun Ewing Dec 17, 1918 00:00
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US-1288098-A // Automatic telephone system. // Talbot G. Martin // Automatic Electric Co
PDF File 1289504.pdf 4.29 MB Shaun Ewing Dec 31, 1918 00:00
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US-1289504-A // Automatic telephone trunking system. // Anders M. Malmberg // Automatic Electric Co
PDF File 1289853.pdf 3.92 MB Shaun Ewing Dec 31, 1918 00:00
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US-1289853-A // Automatic telephone system. // Talbot G. Martin // Automatic Electric Co
PDF File 1289854.pdf 1.68 MB Shaun Ewing Dec 31, 1918 00:00
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US-1289854-A // Automatic telephone system. // Talbot G. Martin // Automatic Electric Co
PDF File 1290148.pdf 2.78 MB Shaun Ewing Jan 07, 1919 00:00
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US-1290148-A // Automatic telephone-release. // Edward D. Fales // Automatic Electric Co
PDF File 1290837.pdf 5.47 MB Shaun Ewing Jan 07, 1919 00:00
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US-1290837-A // Telephone system. // Alexander E. Keith // Automatic Electric Co
PDF File 1291585.pdf 4.04 MB Shaun Ewing Jan 14, 1919 00:00
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US-1291585-A // Telephone trunking system. // Talbot G. Martin // Automatic Electric Co
PDF File 1291586.pdf 2.59 MB Shaun Ewing Jan 14, 1919 00:00
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US-1291586-A // Trunking and supervisory system. // Talbot G. Martin // Automatic Electric Co
PDF File 1291950.pdf 1.32 MB Shaun Ewing Jan 21, 1919 00:00
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US-1291950-A // Automatic telephone-repeater. // William A. Long // Automatic Electric Co
PDF File 1291990.pdf 4.40 MB Shaun Ewing Jan 21, 1919 00:00
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US-1291990-A // Two-wire rotary-connector telephone system. // Talbot G. Martin // Automatic Electric Co
PDF File 1292465.pdf 2.74 MB Shaun Ewing Jan 28, 1919 00:00
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US-1292465-A // Automatic telephone system. // Harry E. Hershey // Automatic Electric Co
PDF File 1292499.pdf 831 kB Shaun Ewing Jan 28, 1919 00:00
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US-1292499-A // Automatic telephone system. // Talbot G. Martin // Automatic Electric Co
PDF File 1292522.pdf 1.83 MB Shaun Ewing Jan 28, 1919 00:00
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US-1292522-A // Semi-automatic telephone system. // Michael Schwartz // Automatic Electric Co
PDF File 1292827.pdf 2.24 MB Shaun Ewing Jan 28, 1919 00:00
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US-1292827-A // Telephone-exchange trunking system. // Fritz Lubberger // Automatic Electric Co
PDF File 1293387.pdf 356 kB Shaun Ewing Feb 04, 1919 00:00
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US-1293387-A // Electromagnetic signaling device. // Charles J. Erickson // Automatic Electric Co
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