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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 405677.pdf | 754 kB | Shaun Ewing | Jun 18, 1889 00:00 |
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US-405677-A // Telephone Combination-circuit. // Frank A. Pickernell, of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 754 kB | Shaun Ewing | Jun 18, 1889 00:00 | US-405677-A // Telephone Combination-circuit. // Frank A. Pickernell, of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 1219561.pdf | 754 kB | Shaun Ewing | Mar 20, 1917 00:00 |
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US-1219561-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph | |||
| Version 1 (current) | 754 kB | Shaun Ewing | Mar 20, 1917 00:00 | US-1219561-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph | ||||
| PDF File 1220756.pdf | 749 kB | Shaun Ewing | Mar 27, 1917 00:00 |
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US-1220756-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph | |||
| Version 1 (current) | 749 kB | Shaun Ewing | Mar 27, 1917 00:00 | US-1220756-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph | ||||
| PDF File 1233766.pdf | 748 kB | Shaun Ewing | Jul 17, 1917 00:00 |
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US-1233766-A // Duplex circuit. // Lloyd Espenschied // American Telephone & Telegraph | |||
| Version 1 (current) | 748 kB | Shaun Ewing | Jul 17, 1917 00:00 | US-1233766-A // Duplex circuit. // Lloyd Espenschied // American Telephone & Telegraph | ||||
| PDF File 743594.pdf | 747 kB | Shaun Ewing | Nov 10, 1903 00:00 |
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US-743594-A // Telephone circuits and apparatus. // George K. Thompson // American Telephone & Telegraph | |||
| Version 1 (current) | 747 kB | Shaun Ewing | Nov 10, 1903 00:00 | US-743594-A // Telephone circuits and apparatus. // George K. Thompson // American Telephone & Telegraph | ||||
| PDF File 833907.pdf | 746 kB | Shaun Ewing | Oct 23, 1906 00:00 |
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US-833907-A // Signaling apparatus for telephone toll-lines. // James G. Wray ; Herbert T. Gardner ; William G. Kinton // American Telephone & Telegraph | |||
| Version 1 (current) | 746 kB | Shaun Ewing | Oct 23, 1906 00:00 | US-833907-A // Signaling apparatus for telephone toll-lines. // James G. Wray ; Herbert T. Gardner ; William G. Kinton // American Telephone & Telegraph | ||||
| PDF File 668967.pdf | 744 kB | Shaun Ewing | Feb 26, 1901 00:00 |
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US-668967-A // Selective signaling apparatus. // John A. Barrett // American Telephone & Telegraph | |||
| Version 1 (current) | 744 kB | Shaun Ewing | Feb 26, 1901 00:00 | US-668967-A // Selective signaling apparatus. // John A. Barrett // American Telephone & Telegraph | ||||
| PDF File 1244697.pdf | 744 kB | Shaun Ewing | Oct 30, 1917 00:00 |
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US-1244697-A // Wireless receiving system. // John R. Carson // American Telephone & Telegraph | |||
| Version 1 (current) | 744 kB | Shaun Ewing | Oct 30, 1917 00:00 | US-1244697-A // Wireless receiving system. // John R. Carson // American Telephone & Telegraph | ||||
| PDF File 1290808.pdf | 743 kB | Shaun Ewing | Jan 07, 1919 00:00 |
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US-1290808-A // Composite ringing apparatus. // John F. Toomey // American Telephone & Telegraph | |||
| Version 1 (current) | 743 kB | Shaun Ewing | Jan 07, 1919 00:00 | US-1290808-A // Composite ringing apparatus. // John F. Toomey // American Telephone & Telegraph | ||||
| PDF File 1361026.pdf | 740 kB | Shaun Ewing | Dec 07, 1920 00:00 |
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US-1361026-A // Testing apparatus // Demarest Charles S. ; Shoffstall Hugh F. // American Telephone & Telegraph | |||
| Version 1 (current) | 740 kB | Shaun Ewing | Dec 07, 1920 00:00 | US-1361026-A // Testing apparatus // Demarest Charles S. ; Shoffstall Hugh F. // American Telephone & Telegraph | ||||
| PDF File 509367.pdf | 740 kB | Shaun Ewing | Nov 28, 1893 00:00 |
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US-509367-A // Switchboard-circuit and signaling apparatus // Francis W. Dunbar And Edmund S. C. May, Of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 740 kB | Shaun Ewing | Nov 28, 1893 00:00 | US-509367-A // Switchboard-circuit and signaling apparatus // Francis W. Dunbar And Edmund S. C. May, Of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 492482.pdf | 735 kB | Shaun Ewing | Feb 28, 1893 00:00 |
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US-492482-A // Signaling apparatus and circuit // Edward J. Hall, Of And Prank A. Pickernell Of Newark New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 735 kB | Shaun Ewing | Feb 28, 1893 00:00 | US-492482-A // Signaling apparatus and circuit // Edward J. Hall, Of And Prank A. Pickernell Of Newark New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 1172760.pdf | 731 kB | Shaun Ewing | Feb 22, 1916 00:00 |
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US-1172760-A // System of call distribution. // Henry M. Bascom // American Telephone & Telegraph | |||
| Version 1 (current) | 731 kB | Shaun Ewing | Feb 22, 1916 00:00 | US-1172760-A // System of call distribution. // Henry M. Bascom // American Telephone & Telegraph | ||||
| PDF File 503252.pdf | 731 kB | Shaun Ewing | Aug 15, 1893 00:00 |
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US-503252-A // Electric switchboard // Frank A. Pickernell, Of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 731 kB | Shaun Ewing | Aug 15, 1893 00:00 | US-503252-A // Electric switchboard // Frank A. Pickernell, Of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 778297.pdf | 729 kB | Shaun Ewing | Dec 27, 1904 00:00 |
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US-778297-A // Composite system duplex-telegraph circuits. // William E. Athearn // American Telephone & Telegraph | |||
| Version 1 (current) | 729 kB | Shaun Ewing | Dec 27, 1904 00:00 | US-778297-A // Composite system duplex-telegraph circuits. // William E. Athearn // American Telephone & Telegraph | ||||
| PDF File 749399.pdf | 723 kB | Shaun Ewing | Jan 12, 1904 00:00 |
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US-749399-A // Alternating-current relay // Greenleaf W. Pickard, Of Massachusetts // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 723 kB | Shaun Ewing | Jan 12, 1904 00:00 | US-749399-A // Alternating-current relay // Greenleaf W. Pickard, Of Massachusetts // American Telephone & Telegraph, New York NY | ||||
| PDF File 905628.pdf | 710 kB | Shaun Ewing | Dec 01, 1908 00:00 |
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US-905628-A // Telegraphic repeating apparatus. // William E. Athearn // American Telephone & Telegraph | |||
| Version 1 (current) | 710 kB | Shaun Ewing | Dec 01, 1908 00:00 | US-905628-A // Telegraphic repeating apparatus. // William E. Athearn // American Telephone & Telegraph | ||||
| PDF File 1358758.pdf | 707 kB | Shaun Ewing | Nov 16, 1920 00:00 |
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US-1358758-A // Telephone trunk-circuits // Kuhn George W. // American Telephone & Telegraph | |||
| Version 1 (current) | 707 kB | Shaun Ewing | Nov 16, 1920 00:00 | US-1358758-A // Telephone trunk-circuits // Kuhn George W. // American Telephone & Telegraph | ||||
| PDF File 1243066.pdf | 697 kB | Shaun Ewing | Oct 16, 1917 00:00 |
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US-1243066-A // Network for neutralizing the characteristic reactance of a loaded line. // Ray S. Hoyt // American Telephone & Telegraph | |||
| Version 1 (current) | 697 kB | Shaun Ewing | Oct 16, 1917 00:00 | US-1243066-A // Network for neutralizing the characteristic reactance of a loaded line. // Ray S. Hoyt // American Telephone & Telegraph | ||||
| PDF File 836611.pdf | 697 kB | Shaun Ewing | Nov 20, 1906 00:00 |
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US-836611-A // Regulating device for telephone relays and transmitters. // Herbert E. Shreeve // American Telephone & Telegraph | |||
| Version 1 (current) | 697 kB | Shaun Ewing | Nov 20, 1906 00:00 | US-836611-A // Regulating device for telephone relays and transmitters. // Herbert E. Shreeve // American Telephone & Telegraph |
