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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1364158.pdf | 1.65 MB | Shaun Ewing | Jan 04, 1921 00:00 |
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US-1364158-A // Method of and apparatus for testing repeater-circuits // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.65 MB | Shaun Ewing | Jan 04, 1921 00:00 | US-1364158-A // Method of and apparatus for testing repeater-circuits // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1492868.pdf | 1.65 MB | Shaun Ewing | May 06, 1924 00:00 |
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US-1492868-A // Telephone system // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.65 MB | Shaun Ewing | May 06, 1924 00:00 | US-1492868-A // Telephone system // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1570771.pdf | 1.62 MB | Shaun Ewing | Jan 26, 1926 00:00 |
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US-1570771-A // Means for and method of reducing interference // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 1.62 MB | Shaun Ewing | Jan 26, 1926 00:00 | US-1570771-A // Means for and method of reducing interference // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1469254.pdf | 1.58 MB | Shaun Ewing | Oct 02, 1923 00:00 |
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US-1469254-A // Carrier telegraph circuits // Deardorff Ralph Warner // American Telephone & Telegraph | |||
| Version 1 (current) | 1.58 MB | Shaun Ewing | Oct 02, 1923 00:00 | US-1469254-A // Carrier telegraph circuits // Deardorff Ralph Warner // American Telephone & Telegraph | ||||
| PDF File 1434518.pdf | 1.54 MB | Shaun Ewing | Nov 07, 1922 00:00 |
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US-1434518-A // Telephone-exchange system // Bailey Rand S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.54 MB | Shaun Ewing | Nov 07, 1922 00:00 | US-1434518-A // Telephone-exchange system // Bailey Rand S. // American Telephone & Telegraph | ||||
| PDF File 1500552.pdf | 1.51 MB | Shaun Ewing | Jul 08, 1924 00:00 |
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US-1500552-A // Multiplex transmission system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 1.51 MB | Shaun Ewing | Jul 08, 1924 00:00 | US-1500552-A // Multiplex transmission system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1762252.pdf | 1.51 MB | Shaun Ewing | Jun 10, 1930 00:00 |
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US-1762252-A // Printing-telegraph exchange system // Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.51 MB | Shaun Ewing | Jun 10, 1930 00:00 | US-1762252-A // Printing-telegraph exchange system // Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1469259.pdf | 1.50 MB | Shaun Ewing | Oct 02, 1923 00:00 |
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US-1469259-A // Carrier telegraph circuits // Hamilton Baxter P. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.50 MB | Shaun Ewing | Oct 02, 1923 00:00 | US-1469259-A // Carrier telegraph circuits // Hamilton Baxter P. // American Telephone & Telegraph | ||||
| PDF File 1555001.pdf | 1.47 MB | Shaun Ewing | Sept 29, 1925 00:00 |
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US-1555001-A // Telephone signaling system // Gray Ernest A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.47 MB | Shaun Ewing | Sept 29, 1925 00:00 | US-1555001-A // Telephone signaling system // Gray Ernest A. // American Telephone & Telegraph | ||||
| PDF File 1695049.pdf | 1.47 MB | Shaun Ewing | Dec 11, 1928 00:00 |
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US-1695049-A // Telephone-exchange system // Jacobsen Emil ; Sperry Arthur B. // American Telephone & Telegraph ; Western Electric Co | |||
| Version 1 (current) | 1.47 MB | Shaun Ewing | Dec 11, 1928 00:00 | US-1695049-A // Telephone-exchange system // Jacobsen Emil ; Sperry Arthur B. // American Telephone & Telegraph ; Western Electric Co | ||||
| PDF File 1574808.pdf | 1.46 MB | Shaun Ewing | Mar 02, 1926 00:00 |
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US-1574808-A // Regulation of transmission // Gannett Danforth K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.46 MB | Shaun Ewing | Mar 02, 1926 00:00 | US-1574808-A // Regulation of transmission // Gannett Danforth K. // American Telephone & Telegraph | ||||
| PDF File 1772168.pdf | 1.45 MB | Shaun Ewing | Aug 05, 1930 00:00 |
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US-1772168-A // Multiplex broadcasting system // Taylor Edmund R. ; Hanson Oscar B. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.45 MB | Shaun Ewing | Aug 05, 1930 00:00 | US-1772168-A // Multiplex broadcasting system // Taylor Edmund R. ; Hanson Oscar B. // American Telephone & Telegraph | ||||
| PDF File 1531360.pdf | 1.44 MB | Shaun Ewing | Mar 31, 1925 00:00 |
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US-1531360-A // Telephone system // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.44 MB | Shaun Ewing | Mar 31, 1925 00:00 | US-1531360-A // Telephone system // Toomey John F. // 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 1501959.pdf | 1.39 MB | Shaun Ewing | Jul 22, 1924 00:00 |
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US-1501959-A // Loaded transmission circuits // Martin William H. ; Shaw Thomas // American Telephone & Telegraph | |||
| Version 1 (current) | 1.39 MB | Shaun Ewing | Jul 22, 1924 00:00 | US-1501959-A // Loaded transmission circuits // Martin William H. ; Shaw Thomas // American Telephone & Telegraph | ||||
| PDF File 1525522.pdf | 1.39 MB | Shaun Ewing | Feb 10, 1925 00:00 |
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US-1525522-A // Printing telegraph system // Vernam Gilbert Sanford // American Telephone & Telegraph | |||
| Version 1 (current) | 1.39 MB | Shaun Ewing | Feb 10, 1925 00:00 | US-1525522-A // Printing telegraph system // Vernam Gilbert Sanford // American Telephone & Telegraph | ||||
| PDF File 1633082.pdf | 1.39 MB | Shaun Ewing | Jun 21, 1927 00:00 |
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US-1633082-A // Distribution of intelligence // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 1.39 MB | Shaun Ewing | Jun 21, 1927 00:00 | US-1633082-A // Distribution of intelligence // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1587620.pdf | 1.38 MB | Shaun Ewing | Jun 08, 1926 00:00 |
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US-1587620-A // Telephone-exchange system // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.38 MB | Shaun Ewing | Jun 08, 1926 00:00 | US-1587620-A // Telephone-exchange system // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1565521.pdf | 1.38 MB | Shaun Ewing | Dec 15, 1925 00:00 |
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US-1565521-A // Secret-communication system // Stone John Stone ; Rose Claude Custer // American Telephone & Telegraph | |||
| Version 1 (current) | 1.38 MB | Shaun Ewing | Dec 15, 1925 00:00 | US-1565521-A // Secret-communication system // Stone John Stone ; Rose Claude Custer // American Telephone & Telegraph | ||||
| PDF File 1577513.pdf | 1.38 MB | Shaun Ewing | Mar 23, 1926 00:00 |
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US-1577513-A // Telephone-exchange system // Blauvelt William G. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.38 MB | Shaun Ewing | Mar 23, 1926 00:00 | US-1577513-A // Telephone-exchange system // Blauvelt William G. // American Telephone & Telegraph |
