Name Size Creator Creation Date Labels Comment  
PDF File 1281251.pdf 1.62 MB Shaun Ewing Oct 08, 1918 00:00
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US-1281251-A // Measured-service telephone system. // Roy C. Gifford // Automatic Electric Co
PDF File 1281112.pdf 1.09 MB Shaun Ewing Oct 08, 1918 00:00
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US-1281112-A // Special-service trunk for automatic telephone systems. // Bernard D. Willis // Automatic Electric Co
PDF File 1280783.pdf 2.73 MB Shaun Ewing Oct 08, 1918 00:00
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US-1280783-A // Ring-back arrangement for common-battery telephone party-lines. // Fritz Lubberger // Automatic Electric Co
PDF File 1280782.pdf 1.39 MB Shaun Ewing Oct 08, 1918 00:00
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US-1280782-A // Automatic release for telephone systems. // Fritz Lubberger // Automatic Electric Co
PDF File 1280609.pdf 1.18 MB Shaun Ewing Oct 01, 1918 00:00
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US-1280609-A // Automatic telephone system. // Bernard D. Willis // Automatic Electric Co
PDF File 1280256.pdf 2.79 MB Shaun Ewing Oct 01, 1918 00:00
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US-1280256-A // Ring-back arrangement for telephone party-lines. // Fritz Lubberger // Automatic Electric Co
PDF File 1279352.pdf 496 kB Shaun Ewing Sept 17, 1918 00:00
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US-1279352-A // Impulse-transmitter. // Alexander E. Keith // Automatic Electric Co
PDF File 1278365.pdf 3.41 MB Shaun Ewing Sept 10, 1918 00:00
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US-1278365-A // Automatic telephone system. // Anders M. Malmberg // Automatic Electric Co
PDF File 1278282.pdf 1.79 MB Shaun Ewing Sept 10, 1918 00:00
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US-1278282-A // Telephone system. // George A. Yanochoswki ; Harry E. Hershey // Automatic Electric Co
PDF File 1277840.pdf 1.22 MB Shaun Ewing Sept 03, 1918 00:00
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US-1277840-A // Automatic telephone calling device. // John G. Blessing // Automatic Electric Co
PDF File 1277675.pdf 1.78 MB Shaun Ewing Sept 03, 1918 00:00
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US-1277675-A // Automatic telephone system. // Bernard D. Willis // Automatic Electric Co
PDF File 1275186.pdf 1.68 MB Shaun Ewing Aug 06, 1918 00:00
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US-1275186-A // Automatic telephone system. // Willis E. Lamb // Automatic Electric Co
PDF File 1275142.pdf 3.68 MB Shaun Ewing Aug 06, 1918 00:00
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US-1275142-A // Telephone-exchange apparatus and system // John Erickson // Automatic Electric Co
PDF File 1275141.pdf 3.61 MB Shaun Ewing Aug 06, 1918 00:00
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US-1275141-A // Telephone-exchange apparatus and system. // John Erickson // Automatic Electric Co
PDF File 1274357.pdf 2.29 MB Shaun Ewing Jul 30, 1918 00:00
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US-1274357-A // Automatic telephone-exchange system. // Herbert L. Fish // Automatic Electric Co
PDF File 1271032.pdf 3.25 MB Shaun Ewing Jul 02, 1918 00:00
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US-1271032-A // Automatic telephone system. // Bernard C. Groh // Automatic Electric Co
PDF File 1270277.pdf 5.79 MB Shaun Ewing Jun 25, 1918 00:00
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US-1270277-A // Two-wire automatic and manual telephone-exchange trunking system. // Edward D. Fales // Automatic Electric Co
PDF File 1269453.pdf 2.74 MB Shaun Ewing Jun 11, 1918 00:00
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US-1269453-A // Automatic party-line telephone-exchange system. // Alexander E. Keith // Automatic Electric Co
PDF File 1269245.pdf 1.14 MB Shaun Ewing Jun 11, 1918 00:00
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US-1269245-A // Automatic telephone system. // Albert Andersen // Automatic Electric Co
PDF File 1268072.pdf 1.69 MB Shaun Ewing May 28, 1918 00:00
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US-1268072-A // Combined selector and repeater apparatus for local-battery telephone exchange systems. // Talbot G. Martin // Automatic Electric Co
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