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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2213398.pdf | 558 kB | Shaun Ewing | Sept 03, 1940 00:00 |
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US-2213398-A // Vacuum tube circuit // Kircher Reymond J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 558 kB | Shaun Ewing | Sept 03, 1940 00:00 | US-2213398-A // Vacuum tube circuit // Kircher Reymond J. // Bell Telephone Labor Inc | ||||
| PDF File 2213397.pdf | 289 kB | Shaun Ewing | Sept 03, 1940 00:00 |
|
US-2213397-A // Alloys // Kingsbury Edwin F. ; Reeve Howard T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 289 kB | Shaun Ewing | Sept 03, 1940 00:00 | US-2213397-A // Alloys // Kingsbury Edwin F. ; Reeve Howard T. // Bell Telephone Labor Inc | ||||
| PDF File 2213320.pdf | 429 kB | Shaun Ewing | Sept 03, 1940 00:00 |
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US-2213320-A // Privacy system // Mathes Robert C. ; Peterson Eugene ; Dudley Homer W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 429 kB | Shaun Ewing | Sept 03, 1940 00:00 | US-2213320-A // Privacy system // Mathes Robert C. ; Peterson Eugene ; Dudley Homer W. // Bell Telephone Labor Inc | ||||
| PDF File 2213037.pdf | 1.03 MB | Shaun Ewing | Aug 27, 1940 00:00 |
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US-2213037-A // Signal transmission system // Bollman John H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.03 MB | Shaun Ewing | Aug 27, 1940 00:00 | US-2213037-A // Signal transmission system // Bollman John H. // Bell Telephone Labor Inc | ||||
| PDF File 2213034.pdf | 756 kB | Shaun Ewing | Aug 27, 1940 00:00 |
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US-2213034-A // Gain control circuits // Barney Harold L. ; Bjornson Bjorn G. ; Curtis Austen M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 756 kB | Shaun Ewing | Aug 27, 1940 00:00 | US-2213034-A // Gain control circuits // Barney Harold L. ; Bjornson Bjorn G. ; Curtis Austen M. // Bell Telephone Labor Inc | ||||
| PDF File 2212960.pdf | 1.02 MB | Shaun Ewing | Aug 27, 1940 00:00 |
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US-2212960-A // Signal controlled switching circuits in telephone systems // Schott Lionel // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.02 MB | Shaun Ewing | Aug 27, 1940 00:00 | US-2212960-A // Signal controlled switching circuits in telephone systems // Schott Lionel // Bell Telephone Labor Inc | ||||
| PDF File 2212929.pdf | 1.34 MB | Shaun Ewing | Aug 27, 1940 00:00 |
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US-2212929-A // High power discharge device // Clark James E. ; Ekstrand Sture O. ; Ronci Victor L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.34 MB | Shaun Ewing | Aug 27, 1940 00:00 | US-2212929-A // High power discharge device // Clark James E. ; Ekstrand Sture O. ; Ronci Victor L. // Bell Telephone Labor Inc | ||||
| PDF File 2212840.pdf | 639 kB | Shaun Ewing | Aug 27, 1940 00:00 |
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US-2212840-A // Wave filter // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 639 kB | Shaun Ewing | Aug 27, 1940 00:00 | US-2212840-A // Wave filter // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2212836.pdf | 499 kB | Shaun Ewing | Aug 27, 1940 00:00 |
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US-2212836-A // Condenser dielectric // Kohman Girard T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 499 kB | Shaun Ewing | Aug 27, 1940 00:00 | US-2212836-A // Condenser dielectric // Kohman Girard T. // Bell Telephone Labor Inc | ||||
| PDF File 2212830.pdf | 785 kB | Shaun Ewing | Aug 27, 1940 00:00 |
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US-2212830-A // Relay // Hickman Clarence N. ; Heights Jackson ; Lakatos Emory // Bell Telephone Labor Inc | |||
| Version 1 (current) | 785 kB | Shaun Ewing | Aug 27, 1940 00:00 | US-2212830-A // Relay // Hickman Clarence N. ; Heights Jackson ; Lakatos Emory // Bell Telephone Labor Inc | ||||
| PDF File 2212338.pdf | 638 kB | Shaun Ewing | Aug 20, 1940 00:00 |
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US-2212338-A // Frequency modulation // Bown Ralph // Bell Telephone Labor Inc | |||
| Version 1 (current) | 638 kB | Shaun Ewing | Aug 20, 1940 00:00 | US-2212338-A // Frequency modulation // Bown Ralph // Bell Telephone Labor Inc | ||||
| PDF File 2212337.pdf | 412 kB | Shaun Ewing | Aug 20, 1940 00:00 |
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US-2212337-A // Electron discharge device circuit // Brewer Sherman T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 412 kB | Shaun Ewing | Aug 20, 1940 00:00 | US-2212337-A // Electron discharge device circuit // Brewer Sherman T. // Bell Telephone Labor Inc | ||||
| PDF File 2212216.pdf | 666 kB | Shaun Ewing | Aug 20, 1940 00:00 |
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US-2212216-A // Telephone set // Tradup Albert // Bell Telephone Labor Inc | |||
| Version 1 (current) | 666 kB | Shaun Ewing | Aug 20, 1940 00:00 | US-2212216-A // Telephone set // Tradup Albert // Bell Telephone Labor Inc | ||||
| PDF File 2212214.pdf | 1.29 MB | Shaun Ewing | Aug 20, 1940 00:00 |
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US-2212214-A // Electrical transmission system // Smith Phillip H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.29 MB | Shaun Ewing | Aug 20, 1940 00:00 | US-2212214-A // Electrical transmission system // Smith Phillip H. // Bell Telephone Labor Inc | ||||
| PDF File 2211176.pdf | 1.95 MB | Shaun Ewing | Aug 13, 1940 00:00 |
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US-2211176-A // Telegraphic line circuit // Singer Fred J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.95 MB | Shaun Ewing | Aug 13, 1940 00:00 | US-2211176-A // Telegraphic line circuit // Singer Fred J. // Bell Telephone Labor Inc | ||||
| PDF File 2210997.pdf | 355 kB | Shaun Ewing | Aug 13, 1940 00:00 |
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US-2210997-A // Feedback amplifier circuit // Anderson Frithiof B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 355 kB | Shaun Ewing | Aug 13, 1940 00:00 | US-2210997-A // Feedback amplifier circuit // Anderson Frithiof B. // Bell Telephone Labor Inc | ||||
| PDF File 2210739.pdf | 812 kB | Shaun Ewing | Aug 06, 1940 00:00 |
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US-2210739-A // Through supervision system // Ulrich Horace W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 812 kB | Shaun Ewing | Aug 06, 1940 00:00 | US-2210739-A // Through supervision system // Ulrich Horace W. // Bell Telephone Labor Inc | ||||
| PDF File 2210732.pdf | 662 kB | Shaun Ewing | Aug 06, 1940 00:00 |
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US-2210732-A // Regulated rectifier system // Rumpel Carl H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 662 kB | Shaun Ewing | Aug 06, 1940 00:00 | US-2210732-A // Regulated rectifier system // Rumpel Carl H. // Bell Telephone Labor Inc | ||||
| PDF File 2210636.pdf | 805 kB | Shaun Ewing | Aug 06, 1940 00:00 |
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US-2210636-A // Guided wave transmission // Schelkunoff Sergei A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 805 kB | Shaun Ewing | Aug 06, 1940 00:00 | US-2210636-A // Guided wave transmission // Schelkunoff Sergei A. // Bell Telephone Labor Inc | ||||
| PDF File 2210520.pdf | 361 kB | Shaun Ewing | Aug 06, 1940 00:00 |
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US-2210520-A // Wire connecting device // Barry Joseph F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 361 kB | Shaun Ewing | Aug 06, 1940 00:00 | US-2210520-A // Wire connecting device // Barry Joseph F. // Bell Telephone Labor Inc |
