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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2200722.pdf | 851 kB | Shaun Ewing | May 14, 1940 00:00 |
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US-2200722-A // Electron discharge device // Pierce John R. ; Teal Gordon K. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 851 kB | Shaun Ewing | May 14, 1940 00:00 | US-2200722-A // Electron discharge device // Pierce John R. ; Teal Gordon K. // Bell Telephone Labor Inc | ||||
| PDF File 2200741.pdf | 548 kB | Shaun Ewing | May 14, 1940 00:00 |
|
US-2200741-A // Electrostatic recording and reproducing // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 548 kB | Shaun Ewing | May 14, 1940 00:00 | US-2200741-A // Electrostatic recording and reproducing // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2200794.pdf | 444 kB | Shaun Ewing | May 14, 1940 00:00 |
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US-2200794-A // Electrical connector // Krantz Hubert K. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 444 kB | Shaun Ewing | May 14, 1940 00:00 | US-2200794-A // Electrical connector // Krantz Hubert K. // Bell Telephone Labor Inc | ||||
| PDF File 2201296.pdf | 2.93 MB | Shaun Ewing | May 21, 1940 00:00 |
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US-2201296-A // Telephone system // Lundstrom Alexis A. ; Norton Edward L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.93 MB | Shaun Ewing | May 21, 1940 00:00 | US-2201296-A // Telephone system // Lundstrom Alexis A. ; Norton Edward L. // Bell Telephone Labor Inc | ||||
| PDF File 2201573.pdf | 717 kB | Shaun Ewing | May 21, 1940 00:00 |
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US-2201573-A // Telephone system // Carpenter Warren W. ; Kittredge Linus E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 717 kB | Shaun Ewing | May 21, 1940 00:00 | US-2201573-A // Telephone system // Carpenter Warren W. ; Kittredge Linus E. // Bell Telephone Labor Inc | ||||
| PDF File 2201879.pdf | 560 kB | Shaun Ewing | May 21, 1940 00:00 |
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US-2201879-A // Delay type piezoelectric relay // Blattner David G. ; Vieth Leonard // Bell Telephone Labor Inc | |||
| Version 1 (current) | 560 kB | Shaun Ewing | May 21, 1940 00:00 | US-2201879-A // Delay type piezoelectric relay // Blattner David G. ; Vieth Leonard // Bell Telephone Labor Inc | ||||
| PDF File 2201880.pdf | 371 kB | Shaun Ewing | May 21, 1940 00:00 |
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US-2201880-A // Electron discharge device // Bruce Edmond // Bell Telephone Labor Inc | |||
| Version 1 (current) | 371 kB | Shaun Ewing | May 21, 1940 00:00 | US-2201880-A // Electron discharge device // Bruce Edmond // Bell Telephone Labor Inc | ||||
| PDF File 2201983.pdf | 491 kB | Shaun Ewing | May 28, 1940 00:00 |
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US-2201983-A // Power supply circuit // Bollman John H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 491 kB | Shaun Ewing | May 28, 1940 00:00 | US-2201983-A // Power supply circuit // Bollman John H. // Bell Telephone Labor Inc | ||||
| PDF File 2201986.pdf | 1.34 MB | Shaun Ewing | May 28, 1940 00:00 |
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US-2201986-A // Telephone system // Collis Raymond E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.34 MB | Shaun Ewing | May 28, 1940 00:00 | US-2201986-A // Telephone system // Collis Raymond E. // Bell Telephone Labor Inc | ||||
| PDF File 2202060.pdf | 362 kB | Shaun Ewing | May 28, 1940 00:00 |
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US-2202060-A // Alarm system // Mitchell Doren // Bell Telephone Labor Inc | |||
| Version 1 (current) | 362 kB | Shaun Ewing | May 28, 1940 00:00 | US-2202060-A // Alarm system // Mitchell Doren // Bell Telephone Labor Inc | ||||
| PDF File 2202139.pdf | 302 kB | Shaun Ewing | May 28, 1940 00:00 |
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US-2202139-A // Magnetic telegraphone // Buhrendorf Frederick G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 302 kB | Shaun Ewing | May 28, 1940 00:00 | US-2202139-A // Magnetic telegraphone // Buhrendorf Frederick G. // Bell Telephone Labor Inc | ||||
| PDF File 2202172.pdf | 1.01 MB | Shaun Ewing | May 28, 1940 00:00 |
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US-2202172-A // Control system // Stoller Hugh M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | May 28, 1940 00:00 | US-2202172-A // Control system // Stoller Hugh M. // Bell Telephone Labor Inc | ||||
| PDF File 2202386.pdf | 310 kB | Shaun Ewing | May 28, 1940 00:00 |
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US-2202386-A // Telephone circuit // Jr. Walter Koenig, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 310 kB | Shaun Ewing | May 28, 1940 00:00 | US-2202386-A // Telephone circuit // Jr. Walter Koenig, // Bell Telephone Labor Inc | ||||
| PDF File 2202391.pdf | 836 kB | Shaun Ewing | May 28, 1940 00:00 |
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US-2202391-A // Piezoelectric apparatus // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 836 kB | Shaun Ewing | May 28, 1940 00:00 | US-2202391-A // Piezoelectric apparatus // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2202467.pdf | 638 kB | Shaun Ewing | May 28, 1940 00:00 |
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US-2202467-A // Artificial larynx // Riesz Robert R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 638 kB | Shaun Ewing | May 28, 1940 00:00 | US-2202467-A // Artificial larynx // Riesz Robert R. // Bell Telephone Labor Inc | ||||
| PDF File 2202474.pdf | 1000 kB | Shaun Ewing | May 28, 1940 00:00 |
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US-2202474-A // Telephone system // Vroom Edward // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1000 kB | Shaun Ewing | May 28, 1940 00:00 | US-2202474-A // Telephone system // Vroom Edward // Bell Telephone Labor Inc | ||||
| PDF File 2202906.pdf | 382 kB | Shaun Ewing | Jun 04, 1940 00:00 |
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US-2202906-A // Telephone receiver // Hawley Melville S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 382 kB | Shaun Ewing | Jun 04, 1940 00:00 | US-2202906-A // Telephone receiver // Hawley Melville S. // Bell Telephone Labor Inc | ||||
| PDF File 2202921.pdf | 2.70 MB | Shaun Ewing | Jun 04, 1940 00:00 |
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US-2202921-A // Trouble recorder // Powell Albert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.70 MB | Shaun Ewing | Jun 04, 1940 00:00 | US-2202921-A // Trouble recorder // Powell Albert C. // Bell Telephone Labor Inc | ||||
| PDF File 2203004.pdf | 445 kB | Shaun Ewing | Jun 04, 1940 00:00 |
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US-2203004-A // Amplifying apparatus // West Julian M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 445 kB | Shaun Ewing | Jun 04, 1940 00:00 | US-2203004-A // Amplifying apparatus // West Julian M. // Bell Telephone Labor Inc | ||||
| PDF File 2203321.pdf | 252 kB | Shaun Ewing | Jun 04, 1940 00:00 |
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US-2203321-A // Switching device // Bascom Henry M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 252 kB | Shaun Ewing | Jun 04, 1940 00:00 | US-2203321-A // Switching device // Bascom Henry M. // Bell Telephone Labor Inc |
