Name Size Creator Creation Date Labels Comment  
PDF File 902930.pdf 619 kB Shaun Ewing Nov 03, 1908 00:00
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US-902930-A // Telephone system. // Harry G. Webster // Kellogg Switchboard & Supply
PDF File 816131.pdf 618 kB Shaun Ewing Mar 27, 1906 00:00
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US-816131-A // Transfer-circuit for telephone-exchange systems. // Charles A. Simpson // Kellogg Switchboard & Supply
PDF File 592417.pdf 617 kB Shaun Ewing Oct 26, 1897 00:00
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US-592417-A // Mtlo g // Milo G. Kellogg, Of Illinois // The Kellogg Switchboard And Supply Company, Of Same Place.
PDF File 1661082.pdf 617 kB Shaun Ewing Feb 28, 1928 00:00
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US-1661082-A // Receiver // Nielsen Emil J. // Kellogg Switchboard & Supply
PDF File 864454.pdf 617 kB Shaun Ewing Aug 27, 1907 00:00
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US-864454-A // Testing system for telephone-lines. // William W. Dean // Kellogg Switchboard & Supply
PDF File 1555443.pdf 615 kB Shaun Ewing Sept 29, 1925 00:00
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US-1555443-A // Switch // Stazak Michael B. // Kellogg Switchboard & Supply
PDF File 2024181.pdf 615 kB Shaun Ewing Dec 17, 1935 00:00
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US-2024181-A // Receiving system // Philips James Herbert // Kellogg Switchboard & Supply
PDF File 775145.pdf 614 kB Shaun Ewing Nov 15, 1904 00:00
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US-775145-A // Electromagnet. // William Meyer // Kellogg Switchboard & Supply
PDF File 2121083.pdf 613 kB Shaun Ewing Jun 21, 1938 00:00
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US-2121083-A // Refrigerating system // Kellogg Leroy D. // Kellogg Switchboard & Supply
PDF File 839910.pdf 613 kB Shaun Ewing Jan 01, 1907 00:00
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US-839910-A // Telephone system. // Harry G. Webster // Kellogg Switchboard & Supply
PDF File 1371248.pdf 611 kB Shaun Ewing Mar 15, 1921 00:00
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US-1371248-A // Governor for calling devices // Kaisling William // Kellogg Switchboard & Supply
PDF File 898195.pdf 610 kB Shaun Ewing Sept 08, 1908 00:00
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US-898195-A // Supervisory system for telephone-lines. // William W. Dean // Kellogg Switchboard & Supply
PDF File 1657124.pdf 610 kB Shaun Ewing Jan 24, 1928 00:00
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US-1657124-A // Reproducer // Ide Harry H. // Kellogg Switchboard & Supply
PDF File 1562647.pdf 608 kB Shaun Ewing Nov 24, 1925 00:00
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US-1562647-A // Contact-bank structure // Kaisling William // Kellogg Switchboard & Supply
PDF File 2470915.pdf 605 kB Shaun Ewing May 24, 1949 00:00
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US-2470915-A // Dual purpose sleeve-spring spring jack // Bosh James E. // Kellogg Switchboard & Supply
PDF File 1217255.pdf 604 kB Shaun Ewing Feb 27, 1917 00:00
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US-1217255-A // Telephone-system. // Charles S. Winston // Kellogg Switchboard & Supply
PDF File 949012.pdf 603 kB Shaun Ewing Feb 15, 1910 00:00
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US-949012-A // Telephone system. // Harry G. Webster // Kellogg Switchboard & Supply
PDF File 967476.pdf 602 kB Shaun Ewing Aug 16, 1910 00:00
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US-967476-A // Telephone system. // Charles S. Winston // Kellogg Switchboard & Supply
PDF File 1805783.pdf 602 kB Shaun Ewing May 19, 1931 00:00
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US-1805783-A // Socket // Olsen Halvor M. // Kellogg Switchboard & Supply
PDF File 906513.pdf 601 kB Shaun Ewing Dec 15, 1908 00:00
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US-906513-A // Telephone system. // William W. Dean // Kellogg Switchboard & Supply
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