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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2189994.pdf | 580 kB | Shaun Ewing | Feb 13, 1940 00:00 |
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US-2189994-A // Telephone system // Reier George C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 580 kB | Shaun Ewing | Feb 13, 1940 00:00 | US-2189994-A // Telephone system // Reier George C. // Bell Telephone Labor Inc | ||||
| PDF File 2190295.pdf | 604 kB | Shaun Ewing | Feb 13, 1940 00:00 |
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US-2190295-A // Switching device // Miller Robert A. ; Rubly Harry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 604 kB | Shaun Ewing | Feb 13, 1940 00:00 | US-2190295-A // Switching device // Miller Robert A. ; Rubly Harry C. // Bell Telephone Labor Inc | ||||
| PDF File 2190307.pdf | 869 kB | Shaun Ewing | Feb 13, 1940 00:00 |
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US-2190307-A // Designation transmitter // Bascom Henry M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 869 kB | Shaun Ewing | Feb 13, 1940 00:00 | US-2190307-A // Designation transmitter // Bascom Henry M. // Bell Telephone Labor Inc | ||||
| PDF File 2190466.pdf | 501 kB | Shaun Ewing | Feb 13, 1940 00:00 |
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US-2190466-A // Telephone substation apparatus // Bennett Arthur F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 501 kB | Shaun Ewing | Feb 13, 1940 00:00 | US-2190466-A // Telephone substation apparatus // Bennett Arthur F. // Bell Telephone Labor Inc | ||||
| PDF File 2190467.pdf | 387 kB | Shaun Ewing | Feb 13, 1940 00:00 |
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US-2190467-A // Telephone substation apparatus // Hamburger Frey // Bell Telephone Labor Inc | |||
| Version 1 (current) | 387 kB | Shaun Ewing | Feb 13, 1940 00:00 | US-2190467-A // Telephone substation apparatus // Hamburger Frey // Bell Telephone Labor Inc | ||||
| PDF File 2190667.pdf | 818 kB | Shaun Ewing | Feb 20, 1940 00:00 |
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US-2190667-A // Permanent magnet alloy // Kelsall George A. ; Nesbitt Ethan A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 818 kB | Shaun Ewing | Feb 20, 1940 00:00 | US-2190667-A // Permanent magnet alloy // Kelsall George A. ; Nesbitt Ethan A. // Bell Telephone Labor Inc | ||||
| PDF File 2190668.pdf | 2.34 MB | Shaun Ewing | Feb 20, 1940 00:00 |
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US-2190668-A // Diode oscillator // Llewellyn Frederick B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.34 MB | Shaun Ewing | Feb 20, 1940 00:00 | US-2190668-A // Diode oscillator // Llewellyn Frederick B. // Bell Telephone Labor Inc | ||||
| PDF File 2191065.pdf | 842 kB | Shaun Ewing | Feb 20, 1940 00:00 |
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US-2191065-A // Wave transmission system // Whittle Horace // Bell Telephone Labor Inc | |||
| Version 1 (current) | 842 kB | Shaun Ewing | Feb 20, 1940 00:00 | US-2191065-A // Wave transmission system // Whittle Horace // Bell Telephone Labor Inc | ||||
| PDF File 2191074.pdf | 397 kB | Shaun Ewing | Feb 20, 1940 00:00 |
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US-2191074-A // Dynamo-electric machine // Herrington Harold W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 397 kB | Shaun Ewing | Feb 20, 1940 00:00 | US-2191074-A // Dynamo-electric machine // Herrington Harold W. // Bell Telephone Labor Inc | ||||
| PDF File 2191151.pdf | 362 kB | Shaun Ewing | Feb 20, 1940 00:00 |
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US-2191151-A // Magnetic core with constant permeability // Hale Stuart G. ; Owens Conrad D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 362 kB | Shaun Ewing | Feb 20, 1940 00:00 | US-2191151-A // Magnetic core with constant permeability // Hale Stuart G. ; Owens Conrad D. // Bell Telephone Labor Inc | ||||
| PDF File 2191167.pdf | 558 kB | Shaun Ewing | Feb 20, 1940 00:00 |
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US-2191167-A // Amplifier // Edson James O. ; Wilson Ira G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 558 kB | Shaun Ewing | Feb 20, 1940 00:00 | US-2191167-A // Amplifier // Edson James O. ; Wilson Ira G. // Bell Telephone Labor Inc | ||||
| PDF File 2191542.pdf | 394 kB | Shaun Ewing | Feb 27, 1940 00:00 |
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US-2191542-A // Vacuum tube circuits // Robertson Donald D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 394 kB | Shaun Ewing | Feb 27, 1940 00:00 | US-2191542-A // Vacuum tube circuits // Robertson Donald D. // Bell Telephone Labor Inc | ||||
| PDF File 2191547.pdf | 373 kB | Shaun Ewing | Feb 27, 1940 00:00 |
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US-2191547-A // Electric wave amplifying system // Smethurst Joseph O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 373 kB | Shaun Ewing | Feb 27, 1940 00:00 | US-2191547-A // Electric wave amplifying system // Smethurst Joseph O. // Bell Telephone Labor Inc | ||||
| PDF File 2191624.pdf | 273 kB | Shaun Ewing | Feb 27, 1940 00:00 |
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US-2191624-A // Wiping solder // Phipps George S. ; Schumacher Earle E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 273 kB | Shaun Ewing | Feb 27, 1940 00:00 | US-2191624-A // Wiping solder // Phipps George S. ; Schumacher Earle E. // Bell Telephone Labor Inc | ||||
| PDF File 2191637.pdf | 1.17 MB | Shaun Ewing | Feb 27, 1940 00:00 |
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US-2191637-A // Frame support // Wier Anthony J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.17 MB | Shaun Ewing | Feb 27, 1940 00:00 | US-2191637-A // Frame support // Wier Anthony J. // Bell Telephone Labor Inc | ||||
| PDF File 2191798.pdf | 487 kB | Shaun Ewing | Feb 27, 1940 00:00 |
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US-2191798-A // Printing telegraph counting apparatus // Mccann Thomas A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 487 kB | Shaun Ewing | Feb 27, 1940 00:00 | US-2191798-A // Printing telegraph counting apparatus // Mccann Thomas A. // Bell Telephone Labor Inc | ||||
| PDF File 2191913.pdf | 999 kB | Shaun Ewing | Feb 27, 1940 00:00 |
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US-2191913-A // Telephone system // Lewis Benjamin F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 999 kB | Shaun Ewing | Feb 27, 1940 00:00 | US-2191913-A // Telephone system // Lewis Benjamin F. // Bell Telephone Labor Inc | ||||
| PDF File 2192025.pdf | 3.95 MB | Shaun Ewing | Feb 27, 1940 00:00 |
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US-2192025-A // Telephone system // Busch Aloysius J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.95 MB | Shaun Ewing | Feb 27, 1940 00:00 | US-2192025-A // Telephone system // Busch Aloysius J. // Bell Telephone Labor Inc | ||||
| PDF File 2192961.pdf | 544 kB | Shaun Ewing | Mar 12, 1940 00:00 |
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US-2192961-A // Signaling system // Branson David E. ; Watson Edward F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 544 kB | Shaun Ewing | Mar 12, 1940 00:00 | US-2192961-A // Signaling system // Branson David E. ; Watson Edward F. // Bell Telephone Labor Inc | ||||
| PDF File 2192986.pdf | 737 kB | Shaun Ewing | Mar 12, 1940 00:00 |
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US-2192986-A // Variable condenser // Rodgers Karl F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 737 kB | Shaun Ewing | Mar 12, 1940 00:00 | US-2192986-A // Variable condenser // Rodgers Karl F. // Bell Telephone Labor Inc |
