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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1711101.pdf | 219 kB | Shaun Ewing | Apr 30, 1929 00:00 |
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US-1711101-A // Means for indicating frequency changes // Shanck Roy B. // American Telephone & Telegraph | |||
| Version 1 (current) | 219 kB | Shaun Ewing | Apr 30, 1929 00:00 | US-1711101-A // Means for indicating frequency changes // Shanck Roy B. // American Telephone & Telegraph | ||||
| PDF File 1711550.pdf | 412 kB | Shaun Ewing | May 07, 1929 00:00 |
|
US-1711550-A // Alternating-current relay // Sturdy William W. // American Telephone & Telegraph | |||
| Version 1 (current) | 412 kB | Shaun Ewing | May 07, 1929 00:00 | US-1711550-A // Alternating-current relay // Sturdy William W. // American Telephone & Telegraph | ||||
| PDF File 1711560.pdf | 1.18 MB | Shaun Ewing | May 07, 1929 00:00 |
|
US-1711560-A // Radio broadcasting system // Espenschied Lloyd ; Bown Ralph ; Martin De Loss K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.18 MB | Shaun Ewing | May 07, 1929 00:00 | US-1711560-A // Radio broadcasting system // Espenschied Lloyd ; Bown Ralph ; Martin De Loss K. // American Telephone & Telegraph | ||||
| PDF File 1711562.pdf | 249 kB | Shaun Ewing | May 07, 1929 00:00 |
|
US-1711562-A // Echo-suppressor circuits // Fetter Charles H. // American Telephone & Telegraph | |||
| Version 1 (current) | 249 kB | Shaun Ewing | May 07, 1929 00:00 | US-1711562-A // Echo-suppressor circuits // Fetter Charles H. // American Telephone & Telegraph | ||||
| PDF File 1712528.pdf | 375 kB | Shaun Ewing | May 14, 1929 00:00 |
|
US-1712528-A // Printing-telegraph system // Swezey Burdette S. // American Telephone & Telegraph | |||
| Version 1 (current) | 375 kB | Shaun Ewing | May 14, 1929 00:00 | US-1712528-A // Printing-telegraph system // Swezey Burdette S. // American Telephone & Telegraph | ||||
| PDF File 1712541.pdf | 771 kB | Shaun Ewing | May 14, 1929 00:00 |
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US-1712541-A // Wire-splicing machine // Wright John W. // American Telephone & Telegraph | |||
| Version 1 (current) | 771 kB | Shaun Ewing | May 14, 1929 00:00 | US-1712541-A // Wire-splicing machine // Wright John W. // American Telephone & Telegraph | ||||
| PDF File 1712542.pdf | 509 kB | Shaun Ewing | May 14, 1929 00:00 |
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US-1712542-A // Toll trunk circuit // Bailey Rand S. // American Telephone & Telegraph | |||
| Version 1 (current) | 509 kB | Shaun Ewing | May 14, 1929 00:00 | US-1712542-A // Toll trunk circuit // Bailey Rand S. // American Telephone & Telegraph | ||||
| PDF File 1713039.pdf | 858 kB | Shaun Ewing | May 14, 1929 00:00 |
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US-1713039-A // Phonograph recording and reproducing // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 858 kB | Shaun Ewing | May 14, 1929 00:00 | US-1713039-A // Phonograph recording and reproducing // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1713603.pdf | 1.82 MB | Shaun Ewing | May 21, 1929 00:00 |
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US-1713603-A // Electrical network // Hoyt Ray S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.82 MB | Shaun Ewing | May 21, 1929 00:00 | US-1713603-A // Electrical network // Hoyt Ray S. // American Telephone & Telegraph | ||||
| PDF File 1713615.pdf | 342 kB | Shaun Ewing | May 21, 1929 00:00 |
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US-1713615-A // Thermionic vacuum tube // Ohl Russell S. // American Telephone & Telegraph | |||
| Version 1 (current) | 342 kB | Shaun Ewing | May 21, 1929 00:00 | US-1713615-A // Thermionic vacuum tube // Ohl Russell S. // American Telephone & Telegraph | ||||
| PDF File 1713618.pdf | 211 kB | Shaun Ewing | May 21, 1929 00:00 |
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US-1713618-A // Electric picture-transmitting apparatus // Overton Warner L. // American Telephone & Telegraph | |||
| Version 1 (current) | 211 kB | Shaun Ewing | May 21, 1929 00:00 | US-1713618-A // Electric picture-transmitting apparatus // Overton Warner L. // American Telephone & Telegraph | ||||
| PDF File 1714525.pdf | 877 kB | Shaun Ewing | May 28, 1929 00:00 |
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US-1714525-A // Suppression of echoes and singing in four-wire circuits // Silent Harold C. // American Telephone & Telegraph | |||
| Version 1 (current) | 877 kB | Shaun Ewing | May 28, 1929 00:00 | US-1714525-A // Suppression of echoes and singing in four-wire circuits // Silent Harold C. // American Telephone & Telegraph | ||||
| PDF File 1714551.pdf | 688 kB | Shaun Ewing | May 28, 1929 00:00 |
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US-1714551-A // Cable-testing arrangement // Edwards Paul G. ; Herrington Harold W. // American Telephone & Telegraph | |||
| Version 1 (current) | 688 kB | Shaun Ewing | May 28, 1929 00:00 | US-1714551-A // Cable-testing arrangement // Edwards Paul G. ; Herrington Harold W. // American Telephone & Telegraph | ||||
| PDF File 1714567.pdf | 281 kB | Shaun Ewing | May 28, 1929 00:00 |
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US-1714567-A // Telegraph circuit // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 281 kB | Shaun Ewing | May 28, 1929 00:00 | US-1714567-A // Telegraph circuit // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1715415.pdf | 429 kB | Shaun Ewing | Jun 04, 1929 00:00 |
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US-1715415-A // Volume-control system // Hanson Oscar B. ; Crisson George ; Mckown Frederick W. // American Telephone & Telegraph | |||
| Version 1 (current) | 429 kB | Shaun Ewing | Jun 04, 1929 00:00 | US-1715415-A // Volume-control system // Hanson Oscar B. ; Crisson George ; Mckown Frederick W. // American Telephone & Telegraph | ||||
| PDF File 1715433.pdf | 647 kB | Shaun Ewing | Jun 04, 1929 00:00 |
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US-1715433-A // Antenna array // Stone John Stone // American Telephone & Telegraph | |||
| Version 1 (current) | 647 kB | Shaun Ewing | Jun 04, 1929 00:00 | US-1715433-A // Antenna array // Stone John Stone // American Telephone & Telegraph | ||||
| PDF File 1715475.pdf | 310 kB | Shaun Ewing | Jun 04, 1929 00:00 |
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US-1715475-A // Electrical protective system // Shetzline Roy A. // American Telephone & Telegraph | |||
| Version 1 (current) | 310 kB | Shaun Ewing | Jun 04, 1929 00:00 | US-1715475-A // Electrical protective system // Shetzline Roy A. // American Telephone & Telegraph | ||||
| PDF File 1716437.pdf | 387 kB | Shaun Ewing | Jun 11, 1929 00:00 |
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US-1716437-A // Testing system // Gannett Danforth K. // American Telephone & Telegraph | |||
| Version 1 (current) | 387 kB | Shaun Ewing | Jun 11, 1929 00:00 | US-1716437-A // Testing system // Gannett Danforth K. // American Telephone & Telegraph | ||||
| PDF File 1716438.pdf | 604 kB | Shaun Ewing | Jun 11, 1929 00:00 |
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US-1716438-A // Testing system // Gannett Danforth K. // American Telephone & Telegraph | |||
| Version 1 (current) | 604 kB | Shaun Ewing | Jun 11, 1929 00:00 | US-1716438-A // Testing system // Gannett Danforth K. // American Telephone & Telegraph | ||||
| PDF File 1717074.pdf | 683 kB | Shaun Ewing | Jun 11, 1929 00:00 |
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US-1717074-A // Telephone-exchange maintenance system // Taplin Carleton V. ; Allen Louis M. ; Bertels Arnold S. // American Telephone & Telegraph ; Bell Telephone Labor Inc | |||
| Version 1 (current) | 683 kB | Shaun Ewing | Jun 11, 1929 00:00 | US-1717074-A // Telephone-exchange maintenance system // Taplin Carleton V. ; Allen Louis M. ; Bertels Arnold S. // American Telephone & Telegraph ; Bell Telephone Labor Inc |
