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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 772023.pdf | 3.03 MB | Shaun Ewing | Oct 11, 1904 00:00 |
|
US-772023-A // Automatic telephone-exchange system and apparatus. // Albert M. Bullard ; Louis A. Falk // American Telephone & Telegraph | |||
| Version 1 (current) | 3.03 MB | Shaun Ewing | Oct 11, 1904 00:00 | US-772023-A // Automatic telephone-exchange system and apparatus. // Albert M. Bullard ; Louis A. Falk // American Telephone & Telegraph | ||||
| PDF File 1102907.pdf | 2.89 MB | Shaun Ewing | Jul 07, 1914 00:00 |
|
US-1102907-A // Telephone central switching system. // Ernest A. Gray ; Edward C. Molina // American Telephone & Telegraph | |||
| Version 1 (current) | 2.89 MB | Shaun Ewing | Jul 07, 1914 00:00 | US-1102907-A // Telephone central switching system. // Ernest A. Gray ; Edward C. Molina // American Telephone & Telegraph | ||||
| PDF File 1254473.pdf | 1.98 MB | Shaun Ewing | Jan 22, 1918 00:00 |
|
US-1254473-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.98 MB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254473-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | ||||
| PDF File 582107.pdf | 1.93 MB | Shaun Ewing | May 04, 1897 00:00 |
|
US-582107-A // Selective signaling circuit // Geoege W. Wiiittemore And John A. Barrett, Of And Warren M. Craft Of New York N. Y. // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 1.93 MB | Shaun Ewing | May 04, 1897 00:00 | US-582107-A // Selective signaling circuit // Geoege W. Wiiittemore And John A. Barrett, Of And Warren M. Craft Of New York N. Y. // American Telephone & Telegraph, New York NY | ||||
| PDF File 1083456.pdf | 1.90 MB | Shaun Ewing | Jan 06, 1914 00:00 |
|
US-1083456-A // Translating and selecting system. // Edward C. Molina // American Telephone & Telegraph | |||
| Version 1 (current) | 1.90 MB | Shaun Ewing | Jan 06, 1914 00:00 | US-1083456-A // Translating and selecting system. // Edward C. Molina // American Telephone & Telegraph | ||||
| PDF File 1254117.pdf | 1.90 MB | Shaun Ewing | Jan 22, 1918 00:00 |
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US-1254117-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.90 MB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254117-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | ||||
| PDF File 1198212.pdf | 1.82 MB | Shaun Ewing | Sept 12, 1916 00:00 |
|
US-1198212-A // Telephone-repeater. // Elwood Grissinger // American Telephone & Telegraph | |||
| Version 1 (current) | 1.82 MB | Shaun Ewing | Sept 12, 1916 00:00 | US-1198212-A // Telephone-repeater. // Elwood Grissinger // American Telephone & Telegraph | ||||
| PDF File 1254116.pdf | 1.68 MB | Shaun Ewing | Jan 22, 1918 00:00 |
|
US-1254116-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.68 MB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254116-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | ||||
| PDF File 594979.pdf | 1.65 MB | Shaun Ewing | Dec 07, 1897 00:00 |
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US-594979-A // Telephonic selective signaling // John" A. Barrett, Of New York // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 1.65 MB | Shaun Ewing | Dec 07, 1897 00:00 | US-594979-A // Telephonic selective signaling // John" A. Barrett, Of New York // American Telephone & Telegraph, New York NY | ||||
| PDF File 1203326.pdf | 1.64 MB | Shaun Ewing | Oct 31, 1916 00:00 |
|
US-1203326-A // Telephone relay or repeater. // Elwood Grissinger // American Telephone & Telegraph | |||
| Version 1 (current) | 1.64 MB | Shaun Ewing | Oct 31, 1916 00:00 | US-1203326-A // Telephone relay or repeater. // Elwood Grissinger // American Telephone & Telegraph | ||||
| PDF File 920258.pdf | 1.63 MB | Shaun Ewing | May 04, 1909 00:00 |
|
US-920258-A // System for telephone-trunking. // Sidney Hand Browne // American Telephone & Telegraph | |||
| Version 1 (current) | 1.63 MB | Shaun Ewing | May 04, 1909 00:00 | US-920258-A // System for telephone-trunking. // Sidney Hand Browne // American Telephone & Telegraph | ||||
| PDF File 1254472.pdf | 1.63 MB | Shaun Ewing | Jan 22, 1918 00:00 |
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US-1254472-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.63 MB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254472-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | ||||
| PDF File 1114174.pdf | 1.59 MB | Shaun Ewing | Oct 20, 1914 00:00 |
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US-1114174-A // Controlling apparatus for telephone switching systems. // Edward C. Molina // American Telephone & Telegraph | |||
| Version 1 (current) | 1.59 MB | Shaun Ewing | Oct 20, 1914 00:00 | US-1114174-A // Controlling apparatus for telephone switching systems. // Edward C. Molina // American Telephone & Telegraph | ||||
| PDF File 1125954.pdf | 1.57 MB | Shaun Ewing | Jan 26, 1915 00:00 |
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US-1125954-A // Telephone-exchange system. // Sidney Hand Browne // American Telephone & Telegraph | |||
| Version 1 (current) | 1.57 MB | Shaun Ewing | Jan 26, 1915 00:00 | US-1125954-A // Telephone-exchange system. // Sidney Hand Browne // American Telephone & Telegraph | ||||
| PDF File 791655.pdf | 1.52 MB | Shaun Ewing | Jun 06, 1905 00:00 |
|
US-791655-A // Telephone-current reinforcer or relay. // Herbert E. Shreeve // American Telephone & Telegraph | |||
| Version 1 (current) | 1.52 MB | Shaun Ewing | Jun 06, 1905 00:00 | US-791655-A // Telephone-current reinforcer or relay. // Herbert E. Shreeve // American Telephone & Telegraph | ||||
| PDF File 1361928.pdf | 1.48 MB | Shaun Ewing | Dec 14, 1920 00:00 |
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US-1361928-A // Testing and adjusting apparatus for cord-circuits // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.48 MB | Shaun Ewing | Dec 14, 1920 00:00 | US-1361928-A // Testing and adjusting apparatus for cord-circuits // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1254471.pdf | 1.47 MB | Shaun Ewing | Jan 22, 1918 00:00 |
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US-1254471-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.47 MB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254471-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | ||||
| PDF File 1363219.pdf | 1.47 MB | Shaun Ewing | Dec 28, 1920 00:00 |
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US-1363219-A // Trunking system // Bascom Henry M. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.47 MB | Shaun Ewing | Dec 28, 1920 00:00 | US-1363219-A // Trunking system // Bascom Henry M. // American Telephone & Telegraph | ||||
| PDF File 772024.pdf | 1.47 MB | Shaun Ewing | Oct 11, 1904 00:00 |
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US-772024-A // Automatic telephone-exchange system and apparatus. // Albert M. Bullard ; Louis A. Falk // American Telephone & Telegraph | |||
| Version 1 (current) | 1.47 MB | Shaun Ewing | Oct 11, 1904 00:00 | US-772024-A // Automatic telephone-exchange system and apparatus. // Albert M. Bullard ; Louis A. Falk // American Telephone & Telegraph | ||||
| PDF File 494385.pdf | 1.45 MB | Shaun Ewing | Mar 28, 1893 00:00 |
|
US-494385-A // Telephone and Signaling Circuit. // Frank A. Pickernell, Of New Jersey And Francis W. Dunbar Of New York N. Y. // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 1.45 MB | Shaun Ewing | Mar 28, 1893 00:00 | US-494385-A // Telephone and Signaling Circuit. // Frank A. Pickernell, Of New Jersey And Francis W. Dunbar Of New York N. Y. // American Telephone & Telegraph, New York NY |
