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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1793582.pdf | 1.97 MB | Shaun Ewing | Feb 24, 1931 00:00 |
|
US-1793582-A // Telephone system // Bailey Rand S. ; Nelson Stanley F. ; Shipley Frank F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.97 MB | Shaun Ewing | Feb 24, 1931 00:00 | US-1793582-A // Telephone system // Bailey Rand S. ; Nelson Stanley F. ; Shipley Frank F. // American Telephone & Telegraph | ||||
| PDF File 1793588.pdf | 449 kB | Shaun Ewing | Feb 24, 1931 00:00 |
|
US-1793588-A // Measuring and monitoring circuits for telephone lines // Cowan Frank A. // American Telephone & Telegraph | |||
| Version 1 (current) | 449 kB | Shaun Ewing | Feb 24, 1931 00:00 | US-1793588-A // Measuring and monitoring circuits for telephone lines // Cowan Frank A. // American Telephone & Telegraph | ||||
| PDF File 1793598.pdf | 805 kB | Shaun Ewing | Feb 24, 1931 00:00 |
|
US-1793598-A // Telephone system // Edwards William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 805 kB | Shaun Ewing | Feb 24, 1931 00:00 | US-1793598-A // Telephone system // Edwards William H. // American Telephone & Telegraph | ||||
| PDF File 1794393.pdf | 954 kB | Shaun Ewing | Mar 03, 1931 00:00 |
|
US-1794393-A // Transmission-measuring apparatus // Bown Ralph ; Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 954 kB | Shaun Ewing | Mar 03, 1931 00:00 | US-1794393-A // Transmission-measuring apparatus // Bown Ralph ; Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1794418.pdf | 219 kB | Shaun Ewing | Mar 03, 1931 00:00 |
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US-1794418-A // Radio receiving circuit // Potter Ralph Kimball // American Telephone & Telegraph | |||
| Version 1 (current) | 219 kB | Shaun Ewing | Mar 03, 1931 00:00 | US-1794418-A // Radio receiving circuit // Potter Ralph Kimball // American Telephone & Telegraph | ||||
| PDF File 1794847.pdf | 703 kB | Shaun Ewing | Mar 03, 1931 00:00 |
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US-1794847-A // Frequency eliminator // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 703 kB | Shaun Ewing | Mar 03, 1931 00:00 | US-1794847-A // Frequency eliminator // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1794889.pdf | 673 kB | Shaun Ewing | Mar 03, 1931 00:00 |
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US-1794889-A // Multiplex system // Fetter Charles H. // American Telephone & Telegraph | |||
| Version 1 (current) | 673 kB | Shaun Ewing | Mar 03, 1931 00:00 | US-1794889-A // Multiplex system // Fetter Charles H. // American Telephone & Telegraph | ||||
| PDF File 1795204.pdf | 711 kB | Shaun Ewing | Mar 03, 1931 00:00 |
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US-1795204-A // Electrical wave filter // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 711 kB | Shaun Ewing | Mar 03, 1931 00:00 | US-1795204-A // Electrical wave filter // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1795389.pdf | 455 kB | Shaun Ewing | Mar 10, 1931 00:00 |
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US-1795389-A // Selective ringing system // Edwards William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 455 kB | Shaun Ewing | Mar 10, 1931 00:00 | US-1795389-A // Selective ringing system // Edwards William H. // American Telephone & Telegraph | ||||
| PDF File 1795393.pdf | 598 kB | Shaun Ewing | Mar 10, 1931 00:00 |
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US-1795393-A // Reduction of interference // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 598 kB | Shaun Ewing | Mar 10, 1931 00:00 | US-1795393-A // Reduction of interference // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1795397.pdf | 1.27 MB | Shaun Ewing | Mar 10, 1931 00:00 |
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US-1795397-A // Directionally-selective radio receiving system // Hoyt Ray S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.27 MB | Shaun Ewing | Mar 10, 1931 00:00 | US-1795397-A // Directionally-selective radio receiving system // Hoyt Ray S. // American Telephone & Telegraph | ||||
| PDF File 1796486.pdf | 554 kB | Shaun Ewing | Mar 17, 1931 00:00 |
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US-1796486-A // Amplifier for short electric waves // Southworth George C. // American Telephone & Telegraph | |||
| Version 1 (current) | 554 kB | Shaun Ewing | Mar 17, 1931 00:00 | US-1796486-A // Amplifier for short electric waves // Southworth George C. // American Telephone & Telegraph | ||||
| PDF File 1796496.pdf | 329 kB | Shaun Ewing | Mar 17, 1931 00:00 |
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US-1796496-A // Book holder // Volkmar William A. // American Telephone & Telegraph | |||
| Version 1 (current) | 329 kB | Shaun Ewing | Mar 17, 1931 00:00 | US-1796496-A // Book holder // Volkmar William A. // American Telephone & Telegraph | ||||
| PDF File 1796497.pdf | 214 kB | Shaun Ewing | Mar 17, 1931 00:00 |
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US-1796497-A // Rectifying arrangement // Weaver Allan // American Telephone & Telegraph | |||
| Version 1 (current) | 214 kB | Shaun Ewing | Mar 17, 1931 00:00 | US-1796497-A // Rectifying arrangement // Weaver Allan // American Telephone & Telegraph | ||||
| PDF File 1797317.pdf | 622 kB | Shaun Ewing | Mar 24, 1931 00:00 |
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US-1797317-A // Binaural phase-discrimination radio system // Brand Smart ; Mertz Pierre // American Telephone & Telegraph | |||
| Version 1 (current) | 622 kB | Shaun Ewing | Mar 24, 1931 00:00 | US-1797317-A // Binaural phase-discrimination radio system // Brand Smart ; Mertz Pierre // American Telephone & Telegraph | ||||
| PDF File 1797337.pdf | 314 kB | Shaun Ewing | Mar 24, 1931 00:00 |
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US-1797337-A // Connecting pin // Freeman Albert E. // American Telephone & Telegraph | |||
| Version 1 (current) | 314 kB | Shaun Ewing | Mar 24, 1931 00:00 | US-1797337-A // Connecting pin // Freeman Albert E. // American Telephone & Telegraph | ||||
| PDF File 1797365.pdf | 192 kB | Shaun Ewing | Mar 24, 1931 00:00 |
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US-1797365-A // Wire support // Putnam Howard P. // American Telephone & Telegraph | |||
| Version 1 (current) | 192 kB | Shaun Ewing | Mar 24, 1931 00:00 | US-1797365-A // Wire support // Putnam Howard P. // American Telephone & Telegraph | ||||
| PDF File 1798202.pdf | 436 kB | Shaun Ewing | Mar 31, 1931 00:00 |
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US-1798202-A // Relay arrangement for use with voice-operated devices // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 436 kB | Shaun Ewing | Mar 31, 1931 00:00 | US-1798202-A // Relay arrangement for use with voice-operated devices // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1798235.pdf | 2.90 MB | Shaun Ewing | Mar 31, 1931 00:00 |
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US-1798235-A // Printing-telegraph switching system // Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 2.90 MB | Shaun Ewing | Mar 31, 1931 00:00 | US-1798235-A // Printing-telegraph switching system // Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1799159.pdf | 453 kB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799159-A // Multiple-modulation system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 453 kB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799159-A // Multiple-modulation system // Espenschied Lloyd // American Telephone & Telegraph |
