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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2153743.pdf | 1.11 MB | Shaun Ewing | Apr 11, 1939 00:00 |
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US-2153743-A // Attenuation equalizer // Darlington Sidney // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.11 MB | Shaun Ewing | Apr 11, 1939 00:00 | US-2153743-A // Attenuation equalizer // Darlington Sidney // Bell Telephone Labor Inc | ||||
| PDF File 2153641.pdf | 446 kB | Shaun Ewing | Apr 11, 1939 00:00 |
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US-2153641-A // Polarized relay // Pratt Mollie S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 446 kB | Shaun Ewing | Apr 11, 1939 00:00 | US-2153641-A // Polarized relay // Pratt Mollie S. // Bell Telephone Labor Inc | ||||
| PDF File 2153638.pdf | 304 kB | Shaun Ewing | Apr 11, 1939 00:00 |
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US-2153638-A // Amplifier // Norman Nathaniel C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 304 kB | Shaun Ewing | Apr 11, 1939 00:00 | US-2153638-A // Amplifier // Norman Nathaniel C. // Bell Telephone Labor Inc | ||||
| PDF File 2153633.pdf | 530 kB | Shaun Ewing | Apr 11, 1939 00:00 |
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US-2153633-A // Relay // Lovell Clarence A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 530 kB | Shaun Ewing | Apr 11, 1939 00:00 | US-2153633-A // Relay // Lovell Clarence A. // Bell Telephone Labor Inc | ||||
| PDF File 2153528.pdf | 459 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2153528-A // Broad band transmission system // Benning Harvey H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 459 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2153528-A // Broad band transmission system // Benning Harvey H. // Bell Telephone Labor Inc | ||||
| PDF File 2153357.pdf | 474 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2153357-A // Acoustic damping material // Wente Edward C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 474 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2153357-A // Acoustic damping material // Wente Edward C. // Bell Telephone Labor Inc | ||||
| PDF File 2153329.pdf | 1.05 MB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2153329-A // Carrier line power supply // Jutson Robert P. ; Larew Joel L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Apr 04, 1939 00:00 | US-2153329-A // Carrier line power supply // Jutson Robert P. ; Larew Joel L. // Bell Telephone Labor Inc | ||||
| PDF File 2153129.pdf | 1.23 MB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2153129-A // Telephone system // Bascom Henry M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.23 MB | Shaun Ewing | Apr 04, 1939 00:00 | US-2153129-A // Telephone system // Bascom Henry M. // Bell Telephone Labor Inc | ||||
| PDF File 2153128.pdf | 707 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2153128-A // Selective signaling system // Bachelet Albert E. ; Holden William H. T. // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 707 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2153128-A // Selective signaling system // Bachelet Albert E. ; Holden William H. T. // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 2153052.pdf | 1.10 MB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2153052-A // Radio broadcasting system // Rodwin George // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.10 MB | Shaun Ewing | Apr 04, 1939 00:00 | US-2153052-A // Radio broadcasting system // Rodwin George // Bell Telephone Labor Inc | ||||
| PDF File 2153051.pdf | 645 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2153051-A // Electric wave receiver // Pierce John R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 645 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2153051-A // Electric wave receiver // Pierce John R. // Bell Telephone Labor Inc | ||||
| PDF File 2153040.pdf | 679 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2153040-A // Signal transmission system // Dickieson Alton C. ; Fisher Harold J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 679 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2153040-A // Signal transmission system // Dickieson Alton C. ; Fisher Harold J. // Bell Telephone Labor Inc | ||||
| PDF File 2152780.pdf | 393 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152780-A // Shield for electrical spring contacts // Wheeler Clyde H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 393 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152780-A // Shield for electrical spring contacts // Wheeler Clyde H. // Bell Telephone Labor Inc | ||||
| PDF File 2152769.pdf | 1.95 MB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152769-A // Telephone system // Newby Neal D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.95 MB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152769-A // Telephone system // Newby Neal D. // Bell Telephone Labor Inc | ||||
| PDF File 2152764.pdf | 442 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152764-A // Controlling or keying arrangement // King Kenneth L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 442 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152764-A // Controlling or keying arrangement // King Kenneth L. // Bell Telephone Labor Inc | ||||
| PDF File 2152709.pdf | 907 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152709-A // Indicating and measuring circuits // Schott Lionel // Bell Telephone Labor Inc | |||
| Version 1 (current) | 907 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152709-A // Indicating and measuring circuits // Schott Lionel // Bell Telephone Labor Inc | ||||
| PDF File 2152706.pdf | 757 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152706-A // Shielding for electrical circuits // Mougey Wilbur E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 757 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152706-A // Shielding for electrical circuits // Mougey Wilbur E. // Bell Telephone Labor Inc | ||||
| PDF File 2152704.pdf | 622 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152704-A // Electric switch // Massonneau Robert F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 622 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152704-A // Electric switch // Massonneau Robert F. // Bell Telephone Labor Inc | ||||
| PDF File 2152475.pdf | 541 kB | Shaun Ewing | Mar 28, 1939 00:00 |
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US-2152475-A // Signaling system // Halligan Clair W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 541 kB | Shaun Ewing | Mar 28, 1939 00:00 | US-2152475-A // Signaling system // Halligan Clair W. // Bell Telephone Labor Inc | ||||
| PDF File 2151821.pdf | 531 kB | Shaun Ewing | Mar 28, 1939 00:00 |
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US-2151821-A // Transmission regulation // Wilson Ira G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 531 kB | Shaun Ewing | Mar 28, 1939 00:00 | US-2151821-A // Transmission regulation // Wilson Ira G. // Bell Telephone Labor Inc |
