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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1674679.pdf | 552 kB | Shaun Ewing | Jun 26, 1928 00:00 |
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US-1674679-A // Voice-operated echo suppressor // Blackwell Otto B. // American Telephone & Telegraph | |||
| Version 1 (current) | 552 kB | Shaun Ewing | Jun 26, 1928 00:00 | US-1674679-A // Voice-operated echo suppressor // Blackwell Otto B. // American Telephone & Telegraph | ||||
| PDF File 1674677.pdf | 666 kB | Shaun Ewing | Jun 26, 1928 00:00 |
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US-1674677-A // Connecter-switch circuit // Bascom Henry M. // American Telephone & Telegraph | |||
| Version 1 (current) | 666 kB | Shaun Ewing | Jun 26, 1928 00:00 | US-1674677-A // Connecter-switch circuit // Bascom Henry M. // American Telephone & Telegraph | ||||
| PDF File 1673830.pdf | 235 kB | Shaun Ewing | Jun 19, 1928 00:00 |
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US-1673830-A // Trouble alarm for telegraph systems // Kirkwood Maclean // American Telephone & Telegraph | |||
| Version 1 (current) | 235 kB | Shaun Ewing | Jun 19, 1928 00:00 | US-1673830-A // Trouble alarm for telegraph systems // Kirkwood Maclean // American Telephone & Telegraph | ||||
| PDF File 1673829.pdf | 248 kB | Shaun Ewing | Jun 19, 1928 00:00 |
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US-1673829-A // Testing of telegraph circuits // Kirkwood Maclean // American Telephone & Telegraph | |||
| Version 1 (current) | 248 kB | Shaun Ewing | Jun 19, 1928 00:00 | US-1673829-A // Testing of telegraph circuits // Kirkwood Maclean // American Telephone & Telegraph | ||||
| PDF File 1673792.pdf | 517 kB | Shaun Ewing | Jun 19, 1928 00:00 |
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US-1673792-A // Level control for carrier-transmission systems // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 517 kB | Shaun Ewing | Jun 19, 1928 00:00 | US-1673792-A // Level control for carrier-transmission systems // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1672940.pdf | 289 kB | Shaun Ewing | Jun 12, 1928 00:00 |
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US-1672940-A // Carrier transmission over power circuits // Honaman Richard K. // American Telephone & Telegraph | |||
| Version 1 (current) | 289 kB | Shaun Ewing | Jun 12, 1928 00:00 | US-1672940-A // Carrier transmission over power circuits // Honaman Richard K. // American Telephone & Telegraph | ||||
| PDF File 1672933.pdf | 885 kB | Shaun Ewing | Jun 12, 1928 00:00 |
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US-1672933-A // Lineman's test set // Edwards William H. ; Niles Eliot W. // American Telephone & Telegraph | |||
| Version 1 (current) | 885 kB | Shaun Ewing | Jun 12, 1928 00:00 | US-1672933-A // Lineman's test set // Edwards William H. ; Niles Eliot W. // American Telephone & Telegraph | ||||
| PDF File 1672057.pdf | 348 kB | Shaun Ewing | Jun 05, 1928 00:00 |
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US-1672057-A // Electrical circuits // Clark Alva Benson // American Telephone & Telegraph | |||
| Version 1 (current) | 348 kB | Shaun Ewing | Jun 05, 1928 00:00 | US-1672057-A // Electrical circuits // Clark Alva Benson // American Telephone & Telegraph | ||||
| PDF File 1672056.pdf | 684 kB | Shaun Ewing | Jun 05, 1928 00:00 |
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US-1672056-A // Translating circuit // Carson John R. // American Telephone & Telegraph | |||
| Version 1 (current) | 684 kB | Shaun Ewing | Jun 05, 1928 00:00 | US-1672056-A // Translating circuit // Carson John R. // American Telephone & Telegraph | ||||
| PDF File 1672049.pdf | 371 kB | Shaun Ewing | Jun 05, 1928 00:00 |
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US-1672049-A // Alternating-current relay // Almquist Milton L. // American Telephone & Telegraph | |||
| Version 1 (current) | 371 kB | Shaun Ewing | Jun 05, 1928 00:00 | US-1672049-A // Alternating-current relay // Almquist Milton L. // American Telephone & Telegraph | ||||
| PDF File 1671172.pdf | 654 kB | Shaun Ewing | May 29, 1928 00:00 |
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US-1671172-A // Volume-control apparatus // Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 654 kB | Shaun Ewing | May 29, 1928 00:00 | US-1671172-A // Volume-control apparatus // Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1671151.pdf | 1.42 MB | Shaun Ewing | May 29, 1928 00:00 |
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US-1671151-A // Method of and apparatus for reducing width of transmission bands // French Norman R. ; Zinn Manvel K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.42 MB | Shaun Ewing | May 29, 1928 00:00 | US-1671151-A // Method of and apparatus for reducing width of transmission bands // French Norman R. ; Zinn Manvel K. // American Telephone & Telegraph | ||||
| PDF File 1671143.pdf | 1.33 MB | Shaun Ewing | May 29, 1928 00:00 |
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US-1671143-A // Wave translator // Campbell George A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.33 MB | Shaun Ewing | May 29, 1928 00:00 | US-1671143-A // Wave translator // Campbell George A. // American Telephone & Telegraph | ||||
| PDF File 1671130.pdf | 725 kB | Shaun Ewing | May 29, 1928 00:00 |
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US-1671130-A // Grid circuits of electron tubes // Shackleton Samuel P. // American Telephone & Telegraph | |||
| Version 1 (current) | 725 kB | Shaun Ewing | May 29, 1928 00:00 | US-1671130-A // Grid circuits of electron tubes // Shackleton Samuel P. // American Telephone & Telegraph | ||||
| PDF File 1670376.pdf | 970 kB | Shaun Ewing | May 22, 1928 00:00 |
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US-1670376-A // High-speed signaling system // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 970 kB | Shaun Ewing | May 22, 1928 00:00 | US-1670376-A // High-speed signaling system // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1670375.pdf | 329 kB | Shaun Ewing | May 22, 1928 00:00 |
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US-1670375-A // Picture-transmitting system // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 329 kB | Shaun Ewing | May 22, 1928 00:00 | US-1670375-A // Picture-transmitting system // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1669450.pdf | 793 kB | Shaun Ewing | May 15, 1928 00:00 |
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US-1669450-A // Synchronization in multiplex signaling // Brand Smart // American Telephone & Telegraph | |||
| Version 1 (current) | 793 kB | Shaun Ewing | May 15, 1928 00:00 | US-1669450-A // Synchronization in multiplex signaling // Brand Smart // American Telephone & Telegraph | ||||
| PDF File 1669449.pdf | 834 kB | Shaun Ewing | May 15, 1928 00:00 |
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US-1669449-A // Multiplex signaling system // Brand Smart // American Telephone & Telegraph | |||
| Version 1 (current) | 834 kB | Shaun Ewing | May 15, 1928 00:00 | US-1669449-A // Multiplex signaling system // Brand Smart // American Telephone & Telegraph | ||||
| PDF File 1669448.pdf | 494 kB | Shaun Ewing | May 15, 1928 00:00 |
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US-1669448-A // Multiplex signaling system // Brand Smart // American Telephone & Telegraph | |||
| Version 1 (current) | 494 kB | Shaun Ewing | May 15, 1928 00:00 | US-1669448-A // Multiplex signaling system // Brand Smart // American Telephone & Telegraph | ||||
| PDF File 1669123.pdf | 691 kB | Shaun Ewing | May 08, 1928 00:00 |
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US-1669123-A // Directive radio repeating system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph | |||
| Version 1 (current) | 691 kB | Shaun Ewing | May 08, 1928 00:00 | US-1669123-A // Directive radio repeating system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph |
