Name Size Creator Creation Date Labels Comment  
PDF File 2183945.pdf 659 kB Shaun Ewing Dec 19, 1939 00:00
  • No labels
US-2183945-A // Grounding device for coaxial conductor lines // Schreiner Louis R. // Bell Telephone Labor Inc
PDF File 2183941.pdf 490 kB Shaun Ewing Dec 19, 1939 00:00
  • No labels
US-2183941-A // Signaling system // Pruden Harold M. // Bell Telephone Labor Inc
PDF File 2183713.pdf 934 kB Shaun Ewing Dec 19, 1939 00:00
  • No labels
US-2183713-A // Call transmitter // Field Joseph C. // Bell Telephone Labor Inc
PDF File 2183708.pdf 654 kB Shaun Ewing Dec 19, 1939 00:00
  • No labels
US-2183708-A // Signaling system // Cummings George C. ; Hearn Richard B. // Bell Telephone Labor Inc
PDF File 2183655.pdf 394 kB Shaun Ewing Dec 19, 1939 00:00
  • No labels
US-2183655-A // Means for adjusting vibrating systems // Morton Edmund R. // Bell Telephone Labor Inc
PDF File 2183399.pdf 1.28 MB Shaun Ewing Dec 12, 1939 00:00
  • No labels
US-2183399-A // Ultra-short wave altimeter for aircraft // Heising Raymond A. // Bell Telephone Labor Inc
PDF File 2183389.pdf 685 kB Shaun Ewing Dec 12, 1939 00:00
  • No labels
US-2183389-A // Indicating circuit // Bjornson Bjorn G. // Bell Telephone Labor Inc
PDF File 2183204.pdf 739 kB Shaun Ewing Dec 12, 1939 00:00
  • No labels
US-2183204-A // Electro-optical system // Reynolds Frederick W. // Bell Telephone Labor Inc
PDF File 2183140.pdf 682 kB Shaun Ewing Dec 12, 1939 00:00
  • No labels
US-2183140-A // Cross-talk measuring and correcting apparatus // Hochgraf Lester // Bell Telephone Labor Inc
PDF File 2183123.pdf 1.34 MB Shaun Ewing Dec 12, 1939 00:00
  • No labels
US-2183123-A // Wave filter // Mason Warren P. // Bell Telephone Labor Inc
PDF File 2182968.pdf 496 kB Shaun Ewing Dec 12, 1939 00:00
  • No labels
US-2182968-A // Method of making electrical connections // Lunsford Robert L. // Bell Telephone Labor Inc
PDF File 2182885.pdf 302 kB Shaun Ewing Dec 12, 1939 00:00
  • No labels
US-2182885-A // Cable supporting device // John Everett St. // Bell Telephone Labor Inc
PDF File 2182841.pdf 924 kB Shaun Ewing Dec 12, 1939 00:00
  • No labels
US-2182841-A // Reduction of distortion in signal transmission systems // Davey James R. ; Hysko John L. // Bell Telephone Labor Inc
PDF File 2182340.pdf 356 kB Shaun Ewing Dec 05, 1939 00:00
  • No labels
US-2182340-A // Signaling system // Hearn Richard B. // Bell Telephone Labor Inc
PDF File 2182337.pdf 629 kB Shaun Ewing Dec 05, 1939 00:00
  • No labels
US-2182337-A // Transmission system // Green Estill I. // Bell Telephone Labor Inc
PDF File 2182330.pdf 506 kB Shaun Ewing Dec 05, 1939 00:00
  • No labels
US-2182330-A // Method of fabricating tubular structures // Windeler Alfred S. // Bell Telephone Labor Inc
PDF File 2182076.pdf 1.03 MB Shaun Ewing Dec 05, 1939 00:00
  • No labels
US-2182076-A // Viscous dampener // Elmer Lloyd A. // Bell Telephone Labor Inc
PDF File 2181910.pdf 525 kB Shaun Ewing Dec 05, 1939 00:00
  • No labels
US-2181910-A // Wave amplification // Peterson Liss C. // Bell Telephone Labor Inc
PDF File 2181909.pdf 391 kB Shaun Ewing Dec 05, 1939 00:00
  • No labels
US-2181909-A // Negative impedance circuit // Peterson Liss C. // Bell Telephone Labor Inc
PDF File 2181865.pdf 762 kB Shaun Ewing Dec 05, 1939 00:00
  • No labels
US-2181865-A // Multigrid tube amplifier // Black Knox C. // Bell Telephone Labor Inc
  1. Prev
  2. 1
  3. 12
  4. 13
  5. 14
  6. 15
  7. 16
  8. 17
  9. 18
  10. 19
  11. 20
  12. 21
  13. 22
  14. 23
  15. 24
  16. 150
  17. Next