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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2187104.pdf | 472 kB | Shaun Ewing | Jan 16, 1940 00:00 |
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US-2187104-A // Signaling system // Thorp Vaughn P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 472 kB | Shaun Ewing | Jan 16, 1940 00:00 | US-2187104-A // Signaling system // Thorp Vaughn P. // Bell Telephone Labor Inc | ||||
| PDF File 2187114.pdf | 372 kB | Shaun Ewing | Jan 16, 1940 00:00 |
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US-2187114-A // Pneumatic device // Ellwood Walter B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 372 kB | Shaun Ewing | Jan 16, 1940 00:00 | US-2187114-A // Pneumatic device // Ellwood Walter B. // Bell Telephone Labor Inc | ||||
| PDF File 2187115.pdf | 492 kB | Shaun Ewing | Jan 16, 1940 00:00 |
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US-2187115-A // Switching device // Ellwood Walter B. ; Holden William H. T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 492 kB | Shaun Ewing | Jan 16, 1940 00:00 | US-2187115-A // Switching device // Ellwood Walter B. ; Holden William H. T. // Bell Telephone Labor Inc | ||||
| PDF File 2187158.pdf | 1.24 MB | Shaun Ewing | Jan 16, 1940 00:00 |
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US-2187158-A // Telegraph system // Kinkead Fullerton S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.24 MB | Shaun Ewing | Jan 16, 1940 00:00 | US-2187158-A // Telegraph system // Kinkead Fullerton S. // Bell Telephone Labor Inc | ||||
| PDF File 2187577.pdf | 641 kB | Shaun Ewing | Jan 16, 1940 00:00 |
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US-2187577-A // Switching mechanism // Stockfleth Sigurd J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 641 kB | Shaun Ewing | Jan 16, 1940 00:00 | US-2187577-A // Switching mechanism // Stockfleth Sigurd J. // Bell Telephone Labor Inc | ||||
| PDF File 2187784.pdf | 1.36 MB | Shaun Ewing | Jan 23, 1940 00:00 |
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US-2187784-A // Telephone system // Hersey Ralph E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.36 MB | Shaun Ewing | Jan 23, 1940 00:00 | US-2187784-A // Telephone system // Hersey Ralph E. // Bell Telephone Labor Inc | ||||
| PDF File 2188154.pdf | 498 kB | Shaun Ewing | Jan 23, 1940 00:00 |
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US-2188154-A // Piezoelectric substance and process for producing it // Morgan Stanley O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 498 kB | Shaun Ewing | Jan 23, 1940 00:00 | US-2188154-A // Piezoelectric substance and process for producing it // Morgan Stanley O. // Bell Telephone Labor Inc | ||||
| PDF File 2188159.pdf | 712 kB | Shaun Ewing | Jan 23, 1940 00:00 |
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US-2188159-A // Gas-filled space discharge tube circuits // Jr. George H. Rockwood, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 712 kB | Shaun Ewing | Jan 23, 1940 00:00 | US-2188159-A // Gas-filled space discharge tube circuits // Jr. George H. Rockwood, // Bell Telephone Labor Inc | ||||
| PDF File 2188164.pdf | 496 kB | Shaun Ewing | Jan 23, 1940 00:00 |
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US-2188164-A // Ground potential compensator // Sutiff Carleton B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 496 kB | Shaun Ewing | Jan 23, 1940 00:00 | US-2188164-A // Ground potential compensator // Sutiff Carleton B. // Bell Telephone Labor Inc | ||||
| PDF File 2188659.pdf | 497 kB | Shaun Ewing | Jan 30, 1940 00:00 |
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US-2188659-A // Selector switch brush // Hickman Clarence N. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 497 kB | Shaun Ewing | Jan 30, 1940 00:00 | US-2188659-A // Selector switch brush // Hickman Clarence N. // Bell Telephone Labor Inc | ||||
| PDF File 2188671.pdf | 725 kB | Shaun Ewing | Jan 30, 1940 00:00 |
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US-2188671-A // Wave amplifying system // Wilson Ira G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 725 kB | Shaun Ewing | Jan 30, 1940 00:00 | US-2188671-A // Wave amplifying system // Wilson Ira G. // Bell Telephone Labor Inc | ||||
| PDF File 2188755.pdf | 629 kB | Shaun Ewing | Jan 30, 1940 00:00 |
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US-2188755-A // Method of producing multiconductor signaling cables // Markuson Oscar S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 629 kB | Shaun Ewing | Jan 30, 1940 00:00 | US-2188755-A // Method of producing multiconductor signaling cables // Markuson Oscar S. // Bell Telephone Labor Inc | ||||
| PDF File 2188758.pdf | 1.24 MB | Shaun Ewing | Jan 30, 1940 00:00 |
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US-2188758-A // Transmission and reception of frequency modulated waves // Nyquist Harry // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.24 MB | Shaun Ewing | Jan 30, 1940 00:00 | US-2188758-A // Transmission and reception of frequency modulated waves // Nyquist Harry // Bell Telephone Labor Inc | ||||
| PDF File 2188940.pdf | 672 kB | Shaun Ewing | Feb 06, 1940 00:00 |
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US-2188940-A // Electron discharge device // Diggory Benjamin A. ; Teal Gordon K. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 672 kB | Shaun Ewing | Feb 06, 1940 00:00 | US-2188940-A // Electron discharge device // Diggory Benjamin A. ; Teal Gordon K. // Bell Telephone Labor Inc | ||||
| PDF File 2189546.pdf | 432 kB | Shaun Ewing | Feb 06, 1940 00:00 |
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US-2189546-A // Transmission system // Edson James O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 432 kB | Shaun Ewing | Feb 06, 1940 00:00 | US-2189546-A // Transmission system // Edson James O. // Bell Telephone Labor Inc | ||||
| PDF File 2189548.pdf | 657 kB | Shaun Ewing | Feb 06, 1940 00:00 |
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US-2189548-A // Remote control // Gent Edgar W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 657 kB | Shaun Ewing | Feb 06, 1940 00:00 | US-2189548-A // Remote control // Gent Edgar W. // Bell Telephone Labor Inc | ||||
| PDF File 2189769.pdf | 296 kB | Shaun Ewing | Feb 13, 1940 00:00 |
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US-2189769-A // Telephone signaling system // Johnston Donald F. ; Shiel John B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 296 kB | Shaun Ewing | Feb 13, 1940 00:00 | US-2189769-A // Telephone signaling system // Johnston Donald F. ; Shiel John B. // Bell Telephone Labor Inc | ||||
| PDF File 2189770.pdf | 594 kB | Shaun Ewing | Feb 13, 1940 00:00 |
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US-2189770-A // Piezoelectric controlled oscillator // Samuel Arthur L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 594 kB | Shaun Ewing | Feb 13, 1940 00:00 | US-2189770-A // Piezoelectric controlled oscillator // Samuel Arthur L. // Bell Telephone Labor Inc | ||||
| PDF File 2189898.pdf | 1.53 MB | Shaun Ewing | Feb 13, 1940 00:00 |
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US-2189898-A // System of communication // Hartley Ralph V. L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.53 MB | Shaun Ewing | Feb 13, 1940 00:00 | US-2189898-A // System of communication // Hartley Ralph V. L. // Bell Telephone Labor Inc | ||||
| PDF File 2189944.pdf | 465 kB | Shaun Ewing | Feb 13, 1940 00:00 |
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US-2189944-A // Telephone call transmitter // Field Joseph C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 465 kB | Shaun Ewing | Feb 13, 1940 00:00 | US-2189944-A // Telephone call transmitter // Field Joseph C. // Bell Telephone Labor Inc |
