Name Size Creator Creation Date Labels Comment  
PDF File 1117864.pdf 639 kB Shaun Ewing Nov 17, 1914 00:00
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US-1117864-A // Signaling system. // Malcolm E. Launbranch // Kellogg Switchboard & Supply
PDF File 2310481.pdf 639 kB Shaun Ewing Feb 09, 1943 00:00
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US-2310481-A // Two-way trunk circuit // Wallace Bert A. // Kellogg Switchboard & Supply
PDF File 917017.pdf 638 kB Shaun Ewing Apr 06, 1909 00:00
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US-917017-A // Magnetic device for telephone systems. // William W. Dean // Kellogg Switchboard & Supply
PDF File 2452435.pdf 638 kB Shaun Ewing Oct 26, 1948 00:00
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US-2452435-A // Apparatus for producing elastic coils with connecting tails // Arnold Ralph J. ; Macdonald William D. ; Collins Ralph D. // Kellogg Switchboard & Supply ; Ralph D Collins
PDF File 592418.pdf 636 kB Shaun Ewing Oct 26, 1897 00:00
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US-592418-A // Milo g // Milo G. Kellogg, Op Illinois // The Kellogg Switchboard And Supply Company, Of Same Place.
PDF File 592331.pdf 633 kB Shaun Ewing Oct 26, 1897 00:00
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US-592331-A // Milo g // Milo G. Kellogg, Of Illinois // The Kellogg Switchboard And Supply Company, Of Same Place.
PDF File 592328.pdf 633 kB Shaun Ewing Oct 26, 1897 00:00
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US-592328-A // Milo g // Milg G. Kellogg, Of Illinois // The Kellogg Switchboard And Supply Company, Of Same Place.
PDF File 1607351.pdf 633 kB Shaun Ewing Nov 16, 1926 00:00
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US-1607351-A // Rheostat // Kaisling William // Kellogg Switchboard & Supply
PDF File 878264.pdf 632 kB Shaun Ewing Feb 04, 1908 00:00
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US-878264-A // Telephone central-office apparatus. // Charles S. Winston // Kellogg Switchboard & Supply
PDF File 1333117.pdf 631 kB Shaun Ewing Mar 09, 1920 00:00
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US-1333117-A // Ringing and listening key // Klay Albert // Kellogg Switchboard ; Supply Company
PDF File 1778306.pdf 630 kB Shaun Ewing Oct 14, 1930 00:00
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US-1778306-A // Rheostat // Bohlman Ernest A. // Kellogg Switchboard & Supply
PDF File 592385.pdf 630 kB Shaun Ewing Oct 26, 1897 00:00
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US-592385-A // Milo g // Mtlo G. Kellogg, Of Illinois // The Kellogg Switchboard And Supply Company. Of Same Place.
PDF File 592309.pdf 626 kB Shaun Ewing Oct 26, 1897 00:00
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US-592309-A // Milo g // Milo G. Kellogg, Of Illinois // The Kellogg Switchboard And Supply Company, Of Same Place.
PDF File 1960883.pdf 625 kB Shaun Ewing May 29, 1934 00:00
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US-1960883-A // Telephone system // Wallace Bert A. // Kellogg Switchboard & Supply
PDF File 592336.pdf 624 kB Shaun Ewing Oct 26, 1897 00:00
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US-592336-A // Milo g // Milo G. Kellogg, Of Illinois // The Kellogg Switchboard And Supply Company, Of Same Place.
PDF File 1088771.pdf 624 kB Shaun Ewing Mar 03, 1914 00:00
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US-1088771-A // Electromagnetic device. // William W. Dean // Kellogg Switchboard & Supply
PDF File 1492096.pdf 623 kB Shaun Ewing Apr 29, 1924 00:00
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US-1492096-A // Desk stand // Bohlman Ernest A. // Kellogg Switchboard & Supply
PDF File 1493572.pdf 620 kB Shaun Ewing May 13, 1924 00:00
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US-1493572-A // Polarized relay // Sparks Charles // Kellogg Switchboard & Supply
PDF File 592376.pdf 619 kB Shaun Ewing Oct 26, 1897 00:00
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US-592376-A // Milo g // Milo G. Kellogg, Of Illinois // The Kellogg Switchboard And Supply Company, Of Same Place.
PDF File 2478454.pdf 619 kB Shaun Ewing Aug 09, 1949 00:00
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US-2478454-A // Device for feeding and tensioning raw cordage in the production of coiled cords // Bosh James E. // Kellogg Switchboard & Supply
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