Name Size Creator Creation Date Labels Comment  
PDF File 861340.pdf 416 kB Shaun Ewing Jul 30, 1907 00:00
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US-861340-A // Telephone apparatus. // Charles S. Winston // Kellogg Switchboard & Supply
PDF File 873053.pdf 416 kB Shaun Ewing Dec 10, 1907 00:00
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US-873053-A // Electric condenser. // Frank S. Koch // Kellogg Switchboard & Supply
PDF File 2634403.pdf 414 kB Shaun Ewing Apr 07, 1953 00:00
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US-2634403-A // Control and marking circuits for adding-type impulse counters // Bellamy John I. // Kellogg Switchboard & Supply
PDF File 1797988.pdf 411 kB Shaun Ewing Mar 24, 1931 00:00
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US-1797988-A // Radio receiving system // Koch Earl L. // Kellogg Switchboard & Supply
PDF File 1330565.pdf 409 kB Shaun Ewing Feb 10, 1920 00:00
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US-1330565-A // Switchboard apparatus // Wolf George D. // Kellogg Switchboard & Supply
PDF File 1330059.pdf 409 kB Shaun Ewing Feb 10, 1920 00:00
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US-1330059-A // Pole-changer // Currier Hiram D. // Kellogg Switchboard & Supply
PDF File 1772607.pdf 409 kB Shaun Ewing Aug 12, 1930 00:00
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US-1772607-A // Receiving circuit // Jones Samuel Seaman // Kellogg Switchboard & Supply
PDF File 2093700.pdf 408 kB Shaun Ewing Sept 21, 1937 00:00
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US-2093700-A // Ignition apparatus // Wallenta Bernard H. A. // Kellogg Switchboard & Supply
PDF File 717428.pdf 408 kB Shaun Ewing Dec 30, 1902 00:00
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US-717428-A // Telephone-receiver. // Kempster B. Miller // Kellogg Switchboard & Supply
PDF File 1519603.pdf 407 kB Shaun Ewing Dec 16, 1924 00:00
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US-1519603-A // Interrupter circuits // Cassaday Ormond F. // Kellogg Switchboard & Supply
PDF File 899024.pdf 405 kB Shaun Ewing Sept 22, 1908 00:00
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US-899024-A // Party-line-indicating key. // Clifford C. Bradbury // Kellogg Switchboard & Supply
PDF File 1683606.pdf 402 kB Shaun Ewing Sept 11, 1928 00:00
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US-1683606-A // Radiocoil // Currier Hiram D. // Kellogg Switchboard & Supply
PDF File 2209214.pdf 397 kB Shaun Ewing Jul 23, 1940 00:00
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US-2209214-A // Gang relay // Wallace Bert A. // Kellogg Switchboard & Supply
PDF File 911338.pdf 396 kB Shaun Ewing Feb 02, 1909 00:00
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US-911338-A // Connecting-jack for telephone-switchboards. // Charles H. Smith // Kellogg Switchboard & Supply
PDF File 2024139.pdf 395 kB Shaun Ewing Dec 17, 1935 00:00
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US-2024139-A // Receiving system // Armstrong Herbert M. // Kellogg Switchboard & Supply
PDF File 2635130.pdf 395 kB Shaun Ewing Apr 14, 1953 00:00
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US-2635130-A // Subassembly for telephone sets // Jr. Joseph F. Houdek, // Kellogg Switchboard & Supply
PDF File 1196340.pdf 395 kB Shaun Ewing Aug 29, 1916 00:00
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US-1196340-A // Receiver-operated switch for telephones. // Hiram D. Currier // Kellogg Switchboard & Supply
PDF File 592342.pdf 394 kB Shaun Ewing Oct 26, 1897 00:00
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US-592342-A // Milo g // Milo G. Kellogg, Of Illinois // The Kellogg Switchboard And Supply Company, Op Same Place.
PDF File 1141945.pdf 390 kB Shaun Ewing Jun 08, 1915 00:00
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US-1141945-A // Electrical signaling device. // William W. Dean // Kellogg Switchboard & Supply
PDF File 2156842.pdf 390 kB Shaun Ewing May 02, 1939 00:00
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US-2156842-A // Bell // Eaton George R. // Kellogg Switchboard & Supply
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