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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 3179931.pdf | 1.99 MB | Shaun Ewing | Apr 20, 1965 00:00 |
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US-3179931-A // Alarm transfer system // Middaugh Jack K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.99 MB | Shaun Ewing | Apr 20, 1965 00:00 | US-3179931-A // Alarm transfer system // Middaugh Jack K. // American Telephone & Telegraph | ||||
| PDF File 3912874.pdf | 1.98 MB | Shaun Ewing | Oct 14, 1975 00:00 |
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US-3912874-A // Conference arrangement // Botterell; John Joseph ; Dayton; Robert Lewis ; Guyler; James Raymond // American Telephone & Telegraph | |||
| Version 1 (current) | 1.98 MB | Shaun Ewing | Oct 14, 1975 00:00 | US-3912874-A // Conference arrangement // Botterell; John Joseph ; Dayton; Robert Lewis ; Guyler; James Raymond // American Telephone & Telegraph | ||||
| PDF File 2993095.pdf | 1.97 MB | Shaun Ewing | Jul 18, 1961 00:00 |
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US-2993095-A // Private branch exchange telephone system involving a cordless type switchboard // Arnold Philip H. ; Desnoes Arnold B. ; Stewart G. Douglass ; Wood Edson R. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.97 MB | Shaun Ewing | Jul 18, 1961 00:00 | US-2993095-A // Private branch exchange telephone system involving a cordless type switchboard // Arnold Philip H. ; Desnoes Arnold B. ; Stewart G. Douglass ; Wood Edson R. // American Telephone & Telegraph | ||||
| PDF File 2334534.pdf | 1.96 MB | Shaun Ewing | Nov 16, 1943 00:00 |
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US-2334534-A // Teletypewriter // Ballweg Kenneth E. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.96 MB | Shaun Ewing | Nov 16, 1943 00:00 | US-2334534-A // Teletypewriter // Ballweg Kenneth E. // American Telephone & Telegraph | ||||
| PDF File 2896020.pdf | 1.95 MB | Shaun Ewing | Jul 21, 1959 00:00 |
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US-2896020-A // Multiple transmitter control circuit // Goodman Charles J. ; Walker Charles R. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.95 MB | Shaun Ewing | Jul 21, 1959 00:00 | US-2896020-A // Multiple transmitter control circuit // Goodman Charles J. ; Walker Charles R. // American Telephone & Telegraph | ||||
| PDF File 4516250.pdf | 1.92 MB | Shaun Ewing | May 07, 1985 00:00 |
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US-4516250-A // Frequency and phase comparator with slip detection capability // Grimes; Gary J. // At&t Information Systems | |||
| Version 1 (current) | 1.92 MB | Shaun Ewing | May 07, 1985 00:00 | US-4516250-A // Frequency and phase comparator with slip detection capability // Grimes; Gary J. // At&t Information Systems | ||||
| PDF File 2401507.pdf | 1.91 MB | Shaun Ewing | Jun 04, 1946 00:00 |
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US-2401507-A // Secrecy cipher system // Pierce Ralph E. ; Perry Donald B. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.91 MB | Shaun Ewing | Jun 04, 1946 00:00 | US-2401507-A // Secrecy cipher system // Pierce Ralph E. ; Perry Donald B. // American Telephone & Telegraph | ||||
| PDF File 2397829.pdf | 1.91 MB | Shaun Ewing | Apr 02, 1946 00:00 |
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US-2397829-A // Telephone system // Avery Robert Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.91 MB | Shaun Ewing | Apr 02, 1946 00:00 | US-2397829-A // Telephone system // Avery Robert Campbell // American Telephone & Telegraph | ||||
| PDF File 3078336.pdf | 1.89 MB | Shaun Ewing | Feb 19, 1963 00:00 |
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US-3078336-A // Teletypewriter message distributing system // Cameron Phillip G. ; Maxwell John L. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.89 MB | Shaun Ewing | Feb 19, 1963 00:00 | US-3078336-A // Teletypewriter message distributing system // Cameron Phillip G. ; Maxwell John L. // American Telephone & Telegraph | ||||
| PDF File 2388136.pdf | 1.88 MB | Shaun Ewing | Oct 30, 1945 00:00 |
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US-2388136-A // Party-line printing telegraph system // Gardner Leland A. ; Richards Kenneth W. // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 1.88 MB | Shaun Ewing | Oct 30, 1945 00:00 | US-2388136-A // Party-line printing telegraph system // Gardner Leland A. ; Richards Kenneth W. // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 2981803.pdf | 1.88 MB | Shaun Ewing | Apr 25, 1961 00:00 |
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US-2981803-A // Program switching system // Bachelet Albert E. ; Bibbins George S. ; Celentano Arnold J. ; Pullis George A. // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 1.88 MB | Shaun Ewing | Apr 25, 1961 00:00 | US-2981803-A // Program switching system // Bachelet Albert E. ; Bibbins George S. ; Celentano Arnold J. ; Pullis George A. // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 2401474.pdf | 1.84 MB | Shaun Ewing | Jun 04, 1946 00:00 |
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US-2401474-A // Teletypewriter secrecy system // Gammell Ernest Osmond // American Telephone & Telegraph | |||
| Version 1 (current) | 1.84 MB | Shaun Ewing | Jun 04, 1946 00:00 | US-2401474-A // Teletypewriter secrecy system // Gammell Ernest Osmond // American Telephone & Telegraph | ||||
| PDF File 4467523.pdf | 1.83 MB | Shaun Ewing | Aug 28, 1984 00:00 |
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US-4467523-A // Methods of and apparatus for inserting pins into a substrate // Chisholm; William M. // At&t Technologies, Inc. | |||
| Version 1 (current) | 1.83 MB | Shaun Ewing | Aug 28, 1984 00:00 | US-4467523-A // Methods of and apparatus for inserting pins into a substrate // Chisholm; William M. // At&t Technologies, Inc. | ||||
| PDF File 2477309.pdf | 1.83 MB | Shaun Ewing | Jul 26, 1949 00:00 |
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US-2477309-A // Selective telegraph station calling system // Maxwell Jolin L. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.83 MB | Shaun Ewing | Jul 26, 1949 00:00 | US-2477309-A // Selective telegraph station calling system // Maxwell Jolin L. // American Telephone & Telegraph | ||||
| PDF File 3366880.pdf | 1.80 MB | Shaun Ewing | Jan 30, 1968 00:00 |
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US-3366880-A // Tone controlled wireless telephone extension system // Driver Joel P. // American Tele Extension Co | |||
| Version 1 (current) | 1.80 MB | Shaun Ewing | Jan 30, 1968 00:00 | US-3366880-A // Tone controlled wireless telephone extension system // Driver Joel P. // American Tele Extension Co | ||||
| PDF File 2421919.pdf | 1.79 MB | Shaun Ewing | Jun 10, 1947 00:00 |
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US-2421919-A // Telephone routing system // Avery Robert Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.79 MB | Shaun Ewing | Jun 10, 1947 00:00 | US-2421919-A // Telephone routing system // Avery Robert Campbell // American Telephone & Telegraph | ||||
| PDF File 3252088.pdf | 1.77 MB | Shaun Ewing | May 17, 1966 00:00 |
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US-3252088-A // Apparatus for identifying conductor pairs in a multipair telephone cable // Palmer J. F. Lewis // American Telephone & Telegraph | |||
| Version 1 (current) | 1.77 MB | Shaun Ewing | May 17, 1966 00:00 | US-3252088-A // Apparatus for identifying conductor pairs in a multipair telephone cable // Palmer J. F. Lewis // American Telephone & Telegraph | ||||
| PDF File 2278703.pdf | 1.76 MB | Shaun Ewing | Apr 07, 1942 00:00 |
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US-2278703-A // Teletypewriter recording system // Knittle Gale Leonard // American Telephone & Telegraph | |||
| Version 1 (current) | 1.76 MB | Shaun Ewing | Apr 07, 1942 00:00 | US-2278703-A // Teletypewriter recording system // Knittle Gale Leonard // American Telephone & Telegraph | ||||
| PDF File 2901542.pdf | 1.71 MB | Shaun Ewing | Aug 25, 1959 00:00 |
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US-2901542-A // "wake up" or "morning call" system for automatically signaling private branch exchange extension stations // Henches Eugene W. ; Sheldon Ivan R. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.71 MB | Shaun Ewing | Aug 25, 1959 00:00 | US-2901542-A // "wake up" or "morning call" system for automatically signaling private branch exchange extension stations // Henches Eugene W. ; Sheldon Ivan R. // American Telephone & Telegraph | ||||
| PDF File 2981799.pdf | 1.70 MB | Shaun Ewing | Apr 25, 1961 00:00 |
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US-2981799-A // Data recording system // Riggen Winnifred // American Telephone & Telegraph | |||
| Version 1 (current) | 1.70 MB | Shaun Ewing | Apr 25, 1961 00:00 | US-2981799-A // Data recording system // Riggen Winnifred // American Telephone & Telegraph |
