Name Size Creator Creation Date Labels Comment  
PDF File 851803.pdf 1.98 MB Shaun Ewing Apr 30, 1907 00:00
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US-851803-A // Telephone trunking system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 851500.pdf 1.66 MB Shaun Ewing Apr 23, 1907 00:00
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US-851500-A // Telephone trunking system. // Willam W. Dean // Kellogg Switchboard & Supply
PDF File 850470.pdf 1.40 MB Shaun Ewing Apr 16, 1907 00:00
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US-850470-A // Telephone trunking system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 849464.pdf 2.00 MB Shaun Ewing Apr 09, 1907 00:00
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US-849464-A // Telephone trunking system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 849375.pdf 1.29 MB Shaun Ewing Apr 09, 1907 00:00
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US-849375-A // Telephone system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 848814.pdf 1.65 MB Shaun Ewing Apr 02, 1907 00:00
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US-848814-A // Telephone trunking system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 847984.pdf 1.38 MB Shaun Ewing Mar 19, 1907 00:00
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US-847984-A // Telephone trunking system. // Francis W. Dunbar // Kellogg Switchboard & Supply
PDF File 847449.pdf 231 kB Shaun Ewing Mar 19, 1907 00:00
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US-847449-A // Transmitter-front. // Alfred H. Weiss // Kellogg Switchboard & Supply
PDF File 847385.pdf 863 kB Shaun Ewing Mar 19, 1907 00:00
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US-847385-A // Telephone trunking system. // Harry G. Webster // Kellogg Switchboard & Supply
PDF File 846557.pdf 1.89 MB Shaun Ewing Mar 12, 1907 00:00
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US-846557-A // Telephone trunking system. // Francis W. Dunbar // Kellogg Switchboard & Supply
PDF File 845533.pdf 490 kB Shaun Ewing Feb 26, 1907 00:00
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US-845533-A // Telephone system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 845452.pdf 2.22 MB Shaun Ewing Feb 26, 1907 00:00
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US-845452-A // Telephone trunking system. // Francis W. Dunbar // Kellogg Switchboard & Supply
PDF File 845077.pdf 1.39 MB Shaun Ewing Feb 26, 1907 00:00
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US-845077-A // Telephone trunking system. // Harry C. Goldrick // Kellogg Switchboard & Supply
PDF File 844506.pdf 1.63 MB Shaun Ewing Feb 19, 1907 00:00
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US-844506-A // Telephone trunking system. // Francis W. Dunbar // Kellogg Switchboard & Supply
PDF File 843329.pdf 460 kB Shaun Ewing Feb 05, 1907 00:00
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US-843329-A // Intercommunicating telephone system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 843245.pdf 1.00 MB Shaun Ewing Feb 05, 1907 00:00
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US-843245-A // Telephone trunking system. // Harry G. Webster // Kellogg Switchboard & Supply
PDF File 842306.pdf 597 kB Shaun Ewing Jan 29, 1907 00:00
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US-842306-A // Telephone system. // Francis W. Dunbar // Kellogg Switchboard & Supply
PDF File 842178.pdf 660 kB Shaun Ewing Jan 29, 1907 00:00
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US-842178-A // Telephone trunking system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 841769.pdf 574 kB Shaun Ewing Jan 22, 1907 00:00
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US-841769-A // Telephone trunking system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 841747.pdf 1.75 MB Shaun Ewing Jan 22, 1907 00:00
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US-841747-A // Telephone trunking-circuits. // Harry G. Webster // Kellogg Switchboard & Supply
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