Name Size Creator Creation Date Labels Comment  
PDF File 912397.pdf 549 kB Shaun Ewing Feb 16, 1909 00:00
  • No labels
US-912397-A // Check-controlled device. // Kempster B. Miller // Kellogg Switchboard & Supply
PDF File 911377.pdf 498 kB Shaun Ewing Feb 02, 1909 00:00
  • No labels
US-911377-A // Party-line indicating-key. // Guy M. Campbell // Kellogg Switchboard & Supply
PDF File 911339.pdf 683 kB Shaun Ewing Feb 02, 1909 00:00
  • No labels
US-911339-A // Party-line indicating-key. // Charles H. Smith // Kellogg Switchboard & Supply
PDF File 911338.pdf 396 kB Shaun Ewing Feb 02, 1909 00:00
  • No labels
US-911338-A // Connecting-jack for telephone-switchboards. // Charles H. Smith // Kellogg Switchboard & Supply
PDF File 911231.pdf 745 kB Shaun Ewing Feb 02, 1909 00:00
  • No labels
US-911231-A // Telephone-testing system. // Harry C. Goldrick // Kellogg Switchboard & Supply
PDF File 911188.pdf 508 kB Shaun Ewing Feb 02, 1909 00:00
  • No labels
US-911188-A // Telephone trunking system. // Charles S. Winston // Kellogg Switchboard & Supply
PDF File 910873.pdf 499 kB Shaun Ewing Jan 26, 1909 00:00
  • No labels
US-910873-A // Telephone ringing system for party-lines. // Charles A. Simpson // Kellogg Switchboard & Supply
PDF File 910314.pdf 709 kB Shaun Ewing Jan 19, 1909 00:00
  • No labels
US-910314-A // Three-wire telephone system. // William Reid // Kellogg Switchboard & Supply
PDF File 909566.pdf 588 kB Shaun Ewing Jan 12, 1909 00:00
  • No labels
US-909566-A // Telephone-transmitter. // Joseph B. Edwards // Kellogg Switchboard & Supply
PDF File 908926.pdf 558 kB Shaun Ewing Jan 05, 1909 00:00
  • No labels
US-908926-A // Three-wire telephone system. // Charles S. Winston // Kellogg Switchboard & Supply
PDF File 908213.pdf 1.34 MB Shaun Ewing Dec 29, 1908 00:00
  • No labels
US-908213-A // Telephone system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 907751.pdf 470 kB Shaun Ewing Dec 29, 1908 00:00
  • No labels
US-907751-A // Testing system for telephone-lines. // William W. Dean // Kellogg Switchboard & Supply
PDF File 907224.pdf 1.19 MB Shaun Ewing Dec 22, 1908 00:00
  • No labels
US-907224-A // Telephone system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 906513.pdf 601 kB Shaun Ewing Dec 15, 1908 00:00
  • No labels
US-906513-A // Telephone system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 905854.pdf 653 kB Shaun Ewing Dec 08, 1908 00:00
  • No labels
US-905854-A // Testing system for telephone-lines. // William W. Dean // Kellogg Switchboard & Supply
PDF File 904850.pdf 834 kB Shaun Ewing Nov 24, 1908 00:00
  • No labels
US-904850-A // Telephone system. // Francis W. Dunbar // Kellogg Switchboard & Supply
PDF File 904583.pdf 483 kB Shaun Ewing Nov 24, 1908 00:00
  • No labels
US-904583-A // Telephone system. // Harry G. Webster // Kellogg Switchboard & Supply
PDF File 903547.pdf 685 kB Shaun Ewing Nov 10, 1908 00:00
  • No labels
US-903547-A // Telephone system. // William W. Dean // Kellogg Switchboard & Supply
PDF File 902930.pdf 619 kB Shaun Ewing Nov 03, 1908 00:00
  • No labels
US-902930-A // Telephone system. // Harry G. Webster // Kellogg Switchboard & Supply
PDF File 902356.pdf 363 kB Shaun Ewing Oct 27, 1908 00:00
  • No labels
US-902356-A // Four-party-line indicating ringing key. // Charles S. Winston // Kellogg Switchboard & Supply
  1. Prev
  2. 1
  3. …
  4. 33
  5. 34
  6. 35
  7. 36
  8. 37
  9. 38
  10. 39
  11. 40
  12. 41
  13. 42
  14. 43
  15. 44
  16. 45
  17. …
  18. 53
  19. Next