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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1980305.pdf | 732 kB | Shaun Ewing | Nov 13, 1934 00:00 |
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US-1980305-A // Telegraph switching system // Weaver Allan // American Telephone & Telegraph | |||
| Version 1 (current) | 732 kB | Shaun Ewing | Nov 13, 1934 00:00 | US-1980305-A // Telegraph switching system // Weaver Allan // American Telephone & Telegraph | ||||
| PDF File 2060008.pdf | 731 kB | Shaun Ewing | Nov 10, 1936 00:00 |
|
US-2060008-A // Two-way signaling system // Abraham Leonard Gladstone // American Telephone & Telegraph | |||
| Version 1 (current) | 731 kB | Shaun Ewing | Nov 10, 1936 00:00 | US-2060008-A // Two-way signaling system // Abraham Leonard Gladstone // American Telephone & Telegraph | ||||
| PDF File 1848220.pdf | 729 kB | Shaun Ewing | Mar 08, 1932 00:00 |
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US-1848220-A // Energy control arrangement // Lindsay Russell H. // American Telephone & Telegraph | |||
| Version 1 (current) | 729 kB | Shaun Ewing | Mar 08, 1932 00:00 | US-1848220-A // Energy control arrangement // Lindsay Russell H. // American Telephone & Telegraph | ||||
| PDF File 1829830.pdf | 729 kB | Shaun Ewing | Nov 03, 1931 00:00 |
|
US-1829830-A // Pilot channel for telegraph systems // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 729 kB | Shaun Ewing | Nov 03, 1931 00:00 | US-1829830-A // Pilot channel for telegraph systems // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1859498.pdf | 727 kB | Shaun Ewing | May 24, 1932 00:00 |
|
US-1859498-A // Vacuum tube control system // Carpe Allen // American Telephone & Telegraph | |||
| Version 1 (current) | 727 kB | Shaun Ewing | May 24, 1932 00:00 | US-1859498-A // Vacuum tube control system // Carpe Allen // American Telephone & Telegraph | ||||
| PDF File 2096108.pdf | 726 kB | Shaun Ewing | Oct 19, 1937 00:00 |
|
US-2096108-A // Teletypewriter switching system // Hoinkis William // American Telephone & Telegraph | |||
| Version 1 (current) | 726 kB | Shaun Ewing | Oct 19, 1937 00:00 | US-2096108-A // Teletypewriter switching system // Hoinkis William // American Telephone & Telegraph | ||||
| PDF File 1853077.pdf | 725 kB | Shaun Ewing | Apr 12, 1932 00:00 |
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US-1853077-A // Timing circuit for telephone calls // Peterson George H. // American Telephone & Telegraph | |||
| Version 1 (current) | 725 kB | Shaun Ewing | Apr 12, 1932 00:00 | US-1853077-A // Timing circuit for telephone calls // Peterson George H. // American Telephone & Telegraph | ||||
| PDF File 2208164.pdf | 724 kB | Shaun Ewing | Jul 16, 1940 00:00 |
|
US-2208164-A // Registering device // Sageman Edward Augustus // American Telephone & Telegraph | |||
| Version 1 (current) | 724 kB | Shaun Ewing | Jul 16, 1940 00:00 | US-2208164-A // Registering device // Sageman Edward Augustus // American Telephone & Telegraph | ||||
| PDF File 2082077.pdf | 722 kB | Shaun Ewing | Jun 01, 1937 00:00 |
|
US-2082077-A // Selective signaling system // Newby Neal Dow ; Moody Dwight Lyman // American Telephone & Telegraph | |||
| Version 1 (current) | 722 kB | Shaun Ewing | Jun 01, 1937 00:00 | US-2082077-A // Selective signaling system // Newby Neal Dow ; Moody Dwight Lyman // American Telephone & Telegraph | ||||
| PDF File 2190546.pdf | 722 kB | Shaun Ewing | Feb 13, 1940 00:00 |
|
US-2190546-A // Control circuit for radio receivers // Laube Otto Theodore // American Telephone & Telegraph | |||
| Version 1 (current) | 722 kB | Shaun Ewing | Feb 13, 1940 00:00 | US-2190546-A // Control circuit for radio receivers // Laube Otto Theodore // American Telephone & Telegraph | ||||
| PDF File 1951465.pdf | 721 kB | Shaun Ewing | Mar 20, 1934 00:00 |
|
US-1951465-A // Echo suppressor // Wright Sumner B. ; Mitchell Doren // American Telephone & Telegraph | |||
| Version 1 (current) | 721 kB | Shaun Ewing | Mar 20, 1934 00:00 | US-1951465-A // Echo suppressor // Wright Sumner B. ; Mitchell Doren // American Telephone & Telegraph | ||||
| PDF File 2017175.pdf | 720 kB | Shaun Ewing | Oct 15, 1935 00:00 |
|
US-2017175-A // Measurement of return loss // Abraham Leonard Gladstone ; Mitchell Doren ; Hawkins Russell Shaw // American Telephone & Telegraph | |||
| Version 1 (current) | 720 kB | Shaun Ewing | Oct 15, 1935 00:00 | US-2017175-A // Measurement of return loss // Abraham Leonard Gladstone ; Mitchell Doren ; Hawkins Russell Shaw // American Telephone & Telegraph | ||||
| PDF File 2040462.pdf | 715 kB | Shaun Ewing | May 12, 1936 00:00 |
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US-2040462-A // Selective signaling system // Bown Ralph // American Telephone & Telegraph | |||
| Version 1 (current) | 715 kB | Shaun Ewing | May 12, 1936 00:00 | US-2040462-A // Selective signaling system // Bown Ralph // American Telephone & Telegraph | ||||
| PDF File 2106805.pdf | 713 kB | Shaun Ewing | Feb 01, 1938 00:00 |
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US-2106805-A // Teletypewriter // Lang Wilmarth Y. ; Watson Edward F. // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 713 kB | Shaun Ewing | Feb 01, 1938 00:00 | US-2106805-A // Teletypewriter // Lang Wilmarth Y. ; Watson Edward F. // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 1953152.pdf | 712 kB | Shaun Ewing | Apr 03, 1934 00:00 |
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US-1953152-A // Signal transmitting system // Clark Alva B. // American Telephone & Telegraph | |||
| Version 1 (current) | 712 kB | Shaun Ewing | Apr 03, 1934 00:00 | US-1953152-A // Signal transmitting system // Clark Alva B. // American Telephone & Telegraph | ||||
| PDF File 1795204.pdf | 711 kB | Shaun Ewing | Mar 03, 1931 00:00 |
|
US-1795204-A // Electrical wave filter // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 711 kB | Shaun Ewing | Mar 03, 1931 00:00 | US-1795204-A // Electrical wave filter // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 2016427.pdf | 709 kB | Shaun Ewing | Oct 08, 1935 00:00 |
|
US-2016427-A // Volume range control // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 709 kB | Shaun Ewing | Oct 08, 1935 00:00 | US-2016427-A // Volume range control // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1823944.pdf | 707 kB | Shaun Ewing | Sept 22, 1931 00:00 |
|
US-1823944-A // Time recording // Kittredge Linus E. ; Dorff Louis A. // American Telephone & Telegraph | |||
| Version 1 (current) | 707 kB | Shaun Ewing | Sept 22, 1931 00:00 | US-1823944-A // Time recording // Kittredge Linus E. ; Dorff Louis A. // American Telephone & Telegraph | ||||
| PDF File 2144709.pdf | 706 kB | Shaun Ewing | Jan 24, 1939 00:00 |
|
US-2144709-A // Gain adjusting apparatus // Romnes Haakon Ingolf // American Telephone & Telegraph | |||
| Version 1 (current) | 706 kB | Shaun Ewing | Jan 24, 1939 00:00 | US-2144709-A // Gain adjusting apparatus // Romnes Haakon Ingolf // American Telephone & Telegraph | ||||
| PDF File 1913496.pdf | 705 kB | Shaun Ewing | Jun 13, 1933 00:00 |
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US-1913496-A // Automatic recordfr for transmission efficiency // Matte Andrew L. // American Telephone & Telegraph | |||
| Version 1 (current) | 705 kB | Shaun Ewing | Jun 13, 1933 00:00 | US-1913496-A // Automatic recordfr for transmission efficiency // Matte Andrew L. // American Telephone & Telegraph |
