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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1734038.pdf | 1.24 MB | Shaun Ewing | Nov 05, 1929 00:00 |
|
US-1734038-A // Electrical transmission of energy // Levy Lucien // American Telephone & Telegraph | |||
| Version 1 (current) | 1.24 MB | Shaun Ewing | Nov 05, 1929 00:00 | US-1734038-A // Electrical transmission of energy // Levy Lucien // American Telephone & Telegraph | ||||
| PDF File 1743588.pdf | 1.22 MB | Shaun Ewing | Jan 14, 1930 00:00 |
|
US-1743588-A // Carrier transmission system for printing telegraphy // Affel Herman A. ; Hamilton Baxter P. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Jan 14, 1930 00:00 | US-1743588-A // Carrier transmission system for printing telegraphy // Affel Herman A. ; Hamilton Baxter P. // American Telephone & Telegraph | ||||
| PDF File 1726578.pdf | 1.22 MB | Shaun Ewing | Sept 03, 1929 00:00 |
|
US-1726578-A // Secret telephone system // Nyquist Harry ; Mertz Pierre // American Telephone & Telegraph | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Sept 03, 1929 00:00 | US-1726578-A // Secret telephone system // Nyquist Harry ; Mertz Pierre // American Telephone & Telegraph | ||||
| PDF File 1548260.pdf | 1.22 MB | Shaun Ewing | Aug 04, 1925 00:00 |
|
US-1548260-A // Multiplex system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Aug 04, 1925 00:00 | US-1548260-A // Multiplex system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1394062.pdf | 1.22 MB | Shaun Ewing | Oct 18, 1921 00:00 |
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US-1394062-A // Means for and method of reducing cross-talk in four-wire circuits // Blackwell Otto B. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Oct 18, 1921 00:00 | US-1394062-A // Means for and method of reducing cross-talk in four-wire circuits // Blackwell Otto B. // American Telephone & Telegraph | ||||
| PDF File 1685913.pdf | 1.21 MB | Shaun Ewing | Oct 02, 1928 00:00 |
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US-1685913-A // Recording and reproducing of sound waves // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Oct 02, 1928 00:00 | US-1685913-A // Recording and reproducing of sound waves // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1431195.pdf | 1.21 MB | Shaun Ewing | Oct 10, 1922 00:00 |
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US-1431195-A // Telephone-exchange system // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Oct 10, 1922 00:00 | US-1431195-A // Telephone-exchange system // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1369003.pdf | 1.21 MB | Shaun Ewing | Feb 22, 1921 00:00 |
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US-1369003-A // Semimechanical switchboard // Blauvelt William G. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Feb 22, 1921 00:00 | US-1369003-A // Semimechanical switchboard // Blauvelt William G. // American Telephone & Telegraph | ||||
| PDF File 1743132.pdf | 1.21 MB | Shaun Ewing | Jan 14, 1930 00:00 |
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US-1743132-A // Equalization of carrier systems // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Jan 14, 1930 00:00 | US-1743132-A // Equalization of carrier systems // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1762278.pdf | 1.21 MB | Shaun Ewing | Jun 10, 1930 00:00 |
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US-1762278-A // Transmission system // Singer Fred J. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Jun 10, 1930 00:00 | US-1762278-A // Transmission system // Singer Fred J. // American Telephone & Telegraph | ||||
| PDF File 1678872.pdf | 1.21 MB | Shaun Ewing | Jul 31, 1928 00:00 |
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US-1678872-A // Method and apparatus for producing musical sounds // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Jul 31, 1928 00:00 | US-1678872-A // Method and apparatus for producing musical sounds // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1743141.pdf | 1.20 MB | Shaun Ewing | Jan 14, 1930 00:00 |
|
US-1743141-A // Equalization of carrier systems // Ilgenfritz Lester M. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Jan 14, 1930 00:00 | US-1743141-A // Equalization of carrier systems // Ilgenfritz Lester M. // American Telephone & Telegraph | ||||
| PDF File 1737830.pdf | 1.20 MB | Shaun Ewing | Dec 03, 1929 00:00 |
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US-1737830-A // Means for and method of volume control of transmission // Crisson George // American Telephone & Telegraph | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Dec 03, 1929 00:00 | US-1737830-A // Means for and method of volume control of transmission // Crisson George // American Telephone & Telegraph | ||||
| PDF File 1639135.pdf | 1.20 MB | Shaun Ewing | Aug 16, 1927 00:00 |
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US-1639135-A // Telephone system // Johnson Herbert B. ; Eagon Lloyd La Fayette // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Aug 16, 1927 00:00 | US-1639135-A // Telephone system // Johnson Herbert B. ; Eagon Lloyd La Fayette // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 1725753.pdf | 1.19 MB | Shaun Ewing | Aug 27, 1929 00:00 |
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US-1725753-A // Office-selecting means for telephone trunk circuits // Jr. John Davidson, ; Phelps Henry E. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Aug 27, 1929 00:00 | US-1725753-A // Office-selecting means for telephone trunk circuits // Jr. John Davidson, ; Phelps Henry E. // American Telephone & Telegraph | ||||
| PDF File 1535269.pdf | 1.19 MB | Shaun Ewing | Apr 28, 1925 00:00 |
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US-1535269-A // Selective signaling apparatus and circuits // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Apr 28, 1925 00:00 | US-1535269-A // Selective signaling apparatus and circuits // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1725756.pdf | 1.19 MB | Shaun Ewing | Aug 27, 1929 00:00 |
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US-1725756-A // Determination of delay by impedance measurements // Gannett Danforth K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Aug 27, 1929 00:00 | US-1725756-A // Determination of delay by impedance measurements // Gannett Danforth K. // American Telephone & Telegraph | ||||
| PDF File 1771445.pdf | 1.19 MB | Shaun Ewing | Jul 29, 1930 00:00 |
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US-1771445-A // Regenerative telegraph repeater // Parker Ralzemond D. ; Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Jul 29, 1930 00:00 | US-1771445-A // Regenerative telegraph repeater // Parker Ralzemond D. ; Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1453980.pdf | 1.18 MB | Shaun Ewing | May 01, 1923 00:00 |
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US-1453980-A // Attenuation equalizer // Hoyt Ray S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.18 MB | Shaun Ewing | May 01, 1923 00:00 | US-1453980-A // Attenuation equalizer // Hoyt Ray S. // American Telephone & Telegraph | ||||
| PDF File 1711560.pdf | 1.18 MB | Shaun Ewing | May 07, 1929 00:00 |
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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 |
