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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2397830.pdf | 730 kB | Shaun Ewing | Apr 02, 1946 00:00 |
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US-2397830-A // Harmonic control system // Bailey Austin // American Telephone & Telegraph | |||
| Version 1 (current) | 730 kB | Shaun Ewing | Apr 02, 1946 00:00 | US-2397830-A // Harmonic control system // Bailey Austin // American Telephone & Telegraph | ||||
| PDF File 2375100.pdf | 714 kB | Shaun Ewing | May 01, 1945 00:00 |
|
US-2375100-A // Electromagnetic relay // Gibbon Charles Orlando // American Telephone & Telegraph | |||
| Version 1 (current) | 714 kB | Shaun Ewing | May 01, 1945 00:00 | US-2375100-A // Electromagnetic relay // Gibbon Charles Orlando // American Telephone & Telegraph | ||||
| PDF File 2470145.pdf | 713 kB | Shaun Ewing | May 17, 1949 00:00 |
|
US-2470145-A // Multifrequency signaling system // Clos Charles // American Telephone & Telegraph | |||
| Version 1 (current) | 713 kB | Shaun Ewing | May 17, 1949 00:00 | US-2470145-A // Multifrequency signaling system // Clos Charles // American Telephone & Telegraph | ||||
| PDF File 2350186.pdf | 711 kB | Shaun Ewing | May 30, 1944 00:00 |
|
US-2350186-A // Teletypewriter system // Perry Donald Burke // American Telephone & Telegraph | |||
| Version 1 (current) | 711 kB | Shaun Ewing | May 30, 1944 00:00 | US-2350186-A // Teletypewriter system // Perry Donald Burke // American Telephone & Telegraph | ||||
| PDF File 2383777.pdf | 702 kB | Shaun Ewing | Aug 28, 1945 00:00 |
|
US-2383777-A // Subharmonic generator // Daly James Bernard // American Telephone & Telegraph | |||
| Version 1 (current) | 702 kB | Shaun Ewing | Aug 28, 1945 00:00 | US-2383777-A // Subharmonic generator // Daly James Bernard // American Telephone & Telegraph | ||||
| PDF File 2630496.pdf | 683 kB | Shaun Ewing | Mar 03, 1953 00:00 |
|
US-2630496-A // Two-way polar telegraph repeater // Harford George Philip // American Telephone & Telegraph | |||
| Version 1 (current) | 683 kB | Shaun Ewing | Mar 03, 1953 00:00 | US-2630496-A // Two-way polar telegraph repeater // Harford George Philip // American Telephone & Telegraph | ||||
| PDF File 2383770.pdf | 678 kB | Shaun Ewing | Aug 28, 1945 00:00 |
|
US-2383770-A // Electrical measuring system // Carson Arthur ; Payne Irving // American Telephone & Telegraph | |||
| Version 1 (current) | 678 kB | Shaun Ewing | Aug 28, 1945 00:00 | US-2383770-A // Electrical measuring system // Carson Arthur ; Payne Irving // American Telephone & Telegraph | ||||
| PDF File 2232912.pdf | 674 kB | Shaun Ewing | Feb 25, 1941 00:00 |
|
US-2232912-A // Three-element carrier code arrangement // Hanley Frank Harold // American Telephone & Telegraph | |||
| Version 1 (current) | 674 kB | Shaun Ewing | Feb 25, 1941 00:00 | US-2232912-A // Three-element carrier code arrangement // Hanley Frank Harold // American Telephone & Telegraph | ||||
| PDF File 2755445.pdf | 666 kB | Shaun Ewing | Jul 17, 1956 00:00 |
|
US-2755445-A // Interconnection of transmission lines // Rhodes Harold A. // American Telephone & Telegraph | |||
| Version 1 (current) | 666 kB | Shaun Ewing | Jul 17, 1956 00:00 | US-2755445-A // Interconnection of transmission lines // Rhodes Harold A. // American Telephone & Telegraph | ||||
| PDF File 2460936.pdf | 666 kB | Shaun Ewing | Feb 08, 1949 00:00 |
|
US-2460936-A // Portable coin collector for telephone systems // Jackman Walter P. // American Telephone & Telegraph | |||
| Version 1 (current) | 666 kB | Shaun Ewing | Feb 08, 1949 00:00 | US-2460936-A // Portable coin collector for telephone systems // Jackman Walter P. // American Telephone & Telegraph | ||||
| PDF File 2312314.pdf | 666 kB | Shaun Ewing | Mar 02, 1943 00:00 |
|
US-2312314-A // Ribbon shifting mechanism // Bordonaro Lucian Emmanuel // American Telephone & Telegraph | |||
| Version 1 (current) | 666 kB | Shaun Ewing | Mar 02, 1943 00:00 | US-2312314-A // Ribbon shifting mechanism // Bordonaro Lucian Emmanuel // American Telephone & Telegraph | ||||
| PDF File 4093826.pdf | 664 kB | Shaun Ewing | Jun 06, 1978 00:00 |
|
US-4093826-A // Tone signaling conversion apparatus // Koster; Frederick Henry // American Telephone And Telegraph Inc. | |||
| Version 1 (current) | 664 kB | Shaun Ewing | Jun 06, 1978 00:00 | US-4093826-A // Tone signaling conversion apparatus // Koster; Frederick Henry // American Telephone And Telegraph Inc. | ||||
| PDF File 2231602.pdf | 662 kB | Shaun Ewing | Feb 11, 1941 00:00 |
|
US-2231602-A // Multiplex high frequency signaling // Southworth George C. // American Telephone & Telegraph | |||
| Version 1 (current) | 662 kB | Shaun Ewing | Feb 11, 1941 00:00 | US-2231602-A // Multiplex high frequency signaling // Southworth George C. // American Telephone & Telegraph | ||||
| PDF File 2472158.pdf | 660 kB | Shaun Ewing | Jun 07, 1949 00:00 |
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US-2472158-A // Radio beacon system // Henry James Matthew // American Telephone And Telepho | |||
| Version 1 (current) | 660 kB | Shaun Ewing | Jun 07, 1949 00:00 | US-2472158-A // Radio beacon system // Henry James Matthew // American Telephone And Telepho | ||||
| PDF File 2421954.pdf | 660 kB | Shaun Ewing | Jun 10, 1947 00:00 |
|
US-2421954-A // Apparatus for indicating teletypewriter speeds // Martin Wade B. // American Telephone & Telegraph | |||
| Version 1 (current) | 660 kB | Shaun Ewing | Jun 10, 1947 00:00 | US-2421954-A // Apparatus for indicating teletypewriter speeds // Martin Wade B. // American Telephone & Telegraph | ||||
| PDF File 2405332.pdf | 653 kB | Shaun Ewing | Aug 06, 1946 00:00 |
|
US-2405332-A // Toll telephone diversion system // Schroeppel Harold Henry // American Telephone & Telegraph | |||
| Version 1 (current) | 653 kB | Shaun Ewing | Aug 06, 1946 00:00 | US-2405332-A // Toll telephone diversion system // Schroeppel Harold Henry // American Telephone & Telegraph | ||||
| PDF File 2908382.pdf | 648 kB | Shaun Ewing | Oct 13, 1959 00:00 |
|
US-2908382-A // Display carrying unit for color telephone sets // Turner Henry G. // American Telephone & Telegraph | |||
| Version 1 (current) | 648 kB | Shaun Ewing | Oct 13, 1959 00:00 | US-2908382-A // Display carrying unit for color telephone sets // Turner Henry G. // American Telephone & Telegraph | ||||
| PDF File 2347505.pdf | 642 kB | Shaun Ewing | Apr 25, 1944 00:00 |
|
US-2347505-A // Phantom magneto telephone system // Rhoads Charles Stanley // American Telephone & Telegraph | |||
| Version 1 (current) | 642 kB | Shaun Ewing | Apr 25, 1944 00:00 | US-2347505-A // Phantom magneto telephone system // Rhoads Charles Stanley // American Telephone & Telegraph | ||||
| PDF File 2360702.pdf | 640 kB | Shaun Ewing | Oct 17, 1944 00:00 |
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US-2360702-A // Teletypewriter system // Martin Wade B. ; Weinmann Robert Henry // American Telephone & Telegraph | |||
| Version 1 (current) | 640 kB | Shaun Ewing | Oct 17, 1944 00:00 | US-2360702-A // Teletypewriter system // Martin Wade B. ; Weinmann Robert Henry // American Telephone & Telegraph | ||||
| PDF File 2866005.pdf | 638 kB | Shaun Ewing | Dec 23, 1958 00:00 |
|
US-2866005-A // Make-busy circuit for trunks in unattended dial office // Kupferle Arthur T. // American Telephone & Telegraph | |||
| Version 1 (current) | 638 kB | Shaun Ewing | Dec 23, 1958 00:00 | US-2866005-A // Make-busy circuit for trunks in unattended dial office // Kupferle Arthur T. // American Telephone & Telegraph |
