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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 716779.pdf | 558 kB | Shaun Ewing | Dec 23, 1902 00:00 |
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US-716779-A // Telephone-transmitter circuit. // Almon B. Stetson // American Telephone & Telegraph | |||
| Version 1 (current) | 558 kB | Shaun Ewing | Dec 23, 1902 00:00 | US-716779-A // Telephone-transmitter circuit. // Almon B. Stetson // American Telephone & Telegraph | ||||
| PDF File 663783.pdf | 557 kB | Shaun Ewing | Dec 11, 1900 00:00 |
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US-663783-A // Selective-signal system. // Frank A. Pickernell // American Telephone & Telegraph | |||
| Version 1 (current) | 557 kB | Shaun Ewing | Dec 11, 1900 00:00 | US-663783-A // Selective-signal system. // Frank A. Pickernell // American Telephone & Telegraph | ||||
| PDF File 1114725.pdf | 553 kB | Shaun Ewing | Oct 27, 1914 00:00 |
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US-1114725-A // Means for determining time intervals in telephone systems. // William G. Blauvelt // American Telephone & Telegraph | |||
| Version 1 (current) | 553 kB | Shaun Ewing | Oct 27, 1914 00:00 | US-1114725-A // Means for determining time intervals in telephone systems. // William G. Blauvelt // American Telephone & Telegraph | ||||
| PDF File 1222303.pdf | 552 kB | Shaun Ewing | Apr 10, 1917 00:00 |
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US-1222303-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph | |||
| Version 1 (current) | 552 kB | Shaun Ewing | Apr 10, 1917 00:00 | US-1222303-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph | ||||
| PDF File 1270465.pdf | 552 kB | Shaun Ewing | Jun 25, 1918 00:00 |
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US-1270465-A // Automatic switching means. // John F. Toomey // American Telephone & Telegraph | |||
| Version 1 (current) | 552 kB | Shaun Ewing | Jun 25, 1918 00:00 | US-1270465-A // Automatic switching means. // John F. Toomey // American Telephone & Telegraph | ||||
| PDF File 1073748.pdf | 551 kB | Shaun Ewing | Sept 23, 1913 00:00 |
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US-1073748-A // System for dividing calls among telephone-operators' positions. // Harold J. W. Fay ; Edward C. Molina // American Telephone & Telegraph | |||
| Version 1 (current) | 551 kB | Shaun Ewing | Sept 23, 1913 00:00 | US-1073748-A // System for dividing calls among telephone-operators' positions. // Harold J. W. Fay ; Edward C. Molina // American Telephone & Telegraph | ||||
| PDF File 1124904.pdf | 550 kB | Shaun Ewing | Jan 12, 1915 00:00 |
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US-1124904-A // Artificial line. // Ray S. Hoyt // American Telephone & Telegraph | |||
| Version 1 (current) | 550 kB | Shaun Ewing | Jan 12, 1915 00:00 | US-1124904-A // Artificial line. // Ray S. Hoyt // American Telephone & Telegraph | ||||
| PDF File 469995.pdf | 548 kB | Shaun Ewing | Mar 01, 1892 00:00 |
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US-469995-A // Electro-magnetic annunciator // Francis W. Dunbar, Of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 548 kB | Shaun Ewing | Mar 01, 1892 00:00 | US-469995-A // Electro-magnetic annunciator // Francis W. Dunbar, Of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 1221547.pdf | 547 kB | Shaun Ewing | Apr 03, 1917 00:00 |
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US-1221547-A // Telegraphy. // Isidor Kitsee // American Telephone & Telegraph | |||
| Version 1 (current) | 547 kB | Shaun Ewing | Apr 03, 1917 00:00 | US-1221547-A // Telegraphy. // Isidor Kitsee // American Telephone & Telegraph | ||||
| PDF File 482174.pdf | 547 kB | Shaun Ewing | Sept 06, 1892 00:00 |
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US-482174-A // Telephone-exchange apparatus // Angus S. Hibbard, Of N. Y. // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 547 kB | Shaun Ewing | Sept 06, 1892 00:00 | US-482174-A // Telephone-exchange apparatus // Angus S. Hibbard, Of N. Y. // American Telephone & Telegraph, New York NY | ||||
| PDF File 596036.pdf | 546 kB | Shaun Ewing | Dec 21, 1897 00:00 |
|
US-596036-A // Auxiliary apparatus for selective electrical signals // George W. Whittemore, Of New York // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 546 kB | Shaun Ewing | Dec 21, 1897 00:00 | US-596036-A // Auxiliary apparatus for selective electrical signals // George W. Whittemore, Of New York // American Telephone & Telegraph, New York NY | ||||
| PDF File 980921.pdf | 545 kB | Shaun Ewing | Jan 10, 1911 00:00 |
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US-980921-A // Loaded phantom-circuit. // George A. Campbell ; Thomas Shaw // American Telephone & Telegraph | |||
| Version 1 (current) | 545 kB | Shaun Ewing | Jan 10, 1911 00:00 | US-980921-A // Loaded phantom-circuit. // George A. Campbell ; Thomas Shaw // American Telephone & Telegraph | ||||
| PDF File 506884.pdf | 541 kB | Shaun Ewing | Oct 17, 1893 00:00 |
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US-506884-A // Apparatus for suppressing telephone disturbing-currents // Frank A. Pickernell, Of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 541 kB | Shaun Ewing | Oct 17, 1893 00:00 | US-506884-A // Apparatus for suppressing telephone disturbing-currents // Frank A. Pickernell, Of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 1093702.pdf | 539 kB | Shaun Ewing | Apr 21, 1914 00:00 |
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US-1093702-A // Relay. // Isidor Kitsee // American Telephone & Telegraph | |||
| Version 1 (current) | 539 kB | Shaun Ewing | Apr 21, 1914 00:00 | US-1093702-A // Relay. // Isidor Kitsee // American Telephone & Telegraph | ||||
| PDF File 874826.pdf | 536 kB | Shaun Ewing | Dec 24, 1907 00:00 |
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US-874826-A // Nullifying disturbances in telegraphic or other signaling circuits. // Edward Blakeney ; Robert E. Chetwood, Jr. // American Telephone & Telegraph | |||
| Version 1 (current) | 536 kB | Shaun Ewing | Dec 24, 1907 00:00 | US-874826-A // Nullifying disturbances in telegraphic or other signaling circuits. // Edward Blakeney ; Robert E. Chetwood, Jr. // American Telephone & Telegraph | ||||
| PDF File 709437.pdf | 534 kB | Shaun Ewing | Sept 16, 1902 00:00 |
|
US-709437-A // Apparatus for composite systems of simultaneous telegraphy and telephony. // John M. Fell // American Telephone & Telegraph | |||
| Version 1 (current) | 534 kB | Shaun Ewing | Sept 16, 1902 00:00 | US-709437-A // Apparatus for composite systems of simultaneous telegraphy and telephony. // John M. Fell // American Telephone & Telegraph | ||||
| PDF File 1360332.pdf | 533 kB | Shaun Ewing | Nov 30, 1920 00:00 |
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US-1360332-A // Testing-circuit // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 533 kB | Shaun Ewing | Nov 30, 1920 00:00 | US-1360332-A // Testing-circuit // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 938026.pdf | 530 kB | Shaun Ewing | Oct 26, 1909 00:00 |
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US-938026-A // Locking and signaling system for telephone-registers. // Alexander S. Spiegel // American Telephone & Telegraph | |||
| Version 1 (current) | 530 kB | Shaun Ewing | Oct 26, 1909 00:00 | US-938026-A // Locking and signaling system for telephone-registers. // Alexander S. Spiegel // American Telephone & Telegraph | ||||
| PDF File 1309400.pdf | 522 kB | Shaun Ewing | Jul 08, 1919 00:00 |
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US-1309400-A // espenschied // Lloyd Espenschied, Of New York // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 522 kB | Shaun Ewing | Jul 08, 1919 00:00 | US-1309400-A // espenschied // Lloyd Espenschied, Of New York // American Telephone & Telegraph, New York NY | ||||
| PDF File 1309459.pdf | 520 kB | Shaun Ewing | Jul 08, 1919 00:00 |
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US-1309459-A // Wireless signaling system // John B. Cabson, Of N. Y. // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 520 kB | Shaun Ewing | Jul 08, 1919 00:00 | US-1309459-A // Wireless signaling system // John B. Cabson, Of N. Y. // American Telephone & Telegraph, New York NY |
