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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2466354.pdf | 762 kB | Shaun Ewing | Apr 05, 1949 00:00 |
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US-2466354-A // Directional radio system // Bagnall Vernon B. // American Telephone & Telegraph | |||
| Version 1 (current) | 762 kB | Shaun Ewing | Apr 05, 1949 00:00 | US-2466354-A // Directional radio system // Bagnall Vernon B. // American Telephone & Telegraph | ||||
| PDF File 2466484.pdf | 526 kB | Shaun Ewing | Apr 05, 1949 00:00 |
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US-2466484-A // Subscriber ringing circuit // Schroeppel Harold H. // American Telephone & Telegraph | |||
| Version 1 (current) | 526 kB | Shaun Ewing | Apr 05, 1949 00:00 | US-2466484-A // Subscriber ringing circuit // Schroeppel Harold H. // American Telephone & Telegraph | ||||
| PDF File 2470145.pdf | 713 kB | Shaun Ewing | May 17, 1949 00:00 |
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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 2471087.pdf | 1.26 MB | Shaun Ewing | May 24, 1949 00:00 |
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US-2471087-A // Toll operator control for telephone coin collectors // Anderson Gustave Adolph // American Telephone & Telegraph | |||
| Version 1 (current) | 1.26 MB | Shaun Ewing | May 24, 1949 00:00 | US-2471087-A // Toll operator control for telephone coin collectors // Anderson Gustave Adolph // American Telephone & Telegraph | ||||
| PDF File 2471712.pdf | 481 kB | Shaun Ewing | May 31, 1949 00:00 |
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US-2471712-A // Intercommunication teletypewriter system // Bacon Walter M. ; Walker Charles R. // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 481 kB | Shaun Ewing | May 31, 1949 00:00 | US-2471712-A // Intercommunication teletypewriter system // Bacon Walter M. ; Walker Charles R. // Bell Telephone Labor Inc ; 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 2472527.pdf | 232 kB | Shaun Ewing | Jun 07, 1949 00:00 |
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US-2472527-A // Drop wire clamp // Gordon Chester S. ; Lally William J. ; Zieschang Gustav H. // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 232 kB | Shaun Ewing | Jun 07, 1949 00:00 | US-2472527-A // Drop wire clamp // Gordon Chester S. ; Lally William J. ; Zieschang Gustav H. // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 2473346.pdf | 362 kB | Shaun Ewing | Jun 14, 1949 00:00 |
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US-2473346-A // Teletypewriter exchange system // Richards Kenneth W. // American Telephone & Telegraph | |||
| Version 1 (current) | 362 kB | Shaun Ewing | Jun 14, 1949 00:00 | US-2473346-A // Teletypewriter exchange system // Richards Kenneth W. // American Telephone & Telegraph | ||||
| PDF File 2474658.pdf | 298 kB | Shaun Ewing | Jun 28, 1949 00:00 |
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US-2474658-A // Type pallet aligning jig // Dorr Gilbert Garvin // American Telephone & Telegraph | |||
| Version 1 (current) | 298 kB | Shaun Ewing | Jun 28, 1949 00:00 | US-2474658-A // Type pallet aligning jig // Dorr Gilbert Garvin // American Telephone & Telegraph | ||||
| 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 2481081.pdf | 319 kB | Shaun Ewing | Sept 06, 1949 00:00 |
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US-2481081-A // Means for aligning type pallets // Celva Walter Gustav // American Telephone & Telegraph | |||
| Version 1 (current) | 319 kB | Shaun Ewing | Sept 06, 1949 00:00 | US-2481081-A // Means for aligning type pallets // Celva Walter Gustav // American Telephone & Telegraph | ||||
| PDF File 2481112.pdf | 417 kB | Shaun Ewing | Sept 06, 1949 00:00 |
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US-2481112-A // Teletypewriter permutation code signal combination counter // Hanley Frank Harold // American Telephone & Telegraph | |||
| Version 1 (current) | 417 kB | Shaun Ewing | Sept 06, 1949 00:00 | US-2481112-A // Teletypewriter permutation code signal combination counter // Hanley Frank Harold // American Telephone & Telegraph | ||||
| PDF File 2494323.pdf | 788 kB | Shaun Ewing | Jan 10, 1950 00:00 |
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US-2494323-A // Signal receiving apparatus // Jr. Edward Henry Weber, // American Telephone & Telegraph | |||
| Version 1 (current) | 788 kB | Shaun Ewing | Jan 10, 1950 00:00 | US-2494323-A // Signal receiving apparatus // Jr. Edward Henry Weber, // American Telephone & Telegraph | ||||
| PDF File 2497710.pdf | 206 kB | Shaun Ewing | Feb 14, 1950 00:00 |
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US-2497710-A // Gaff guard for linemen's climbers // Wollensack Clifford Nelson // American Telephone & Telegraph | |||
| Version 1 (current) | 206 kB | Shaun Ewing | Feb 14, 1950 00:00 | US-2497710-A // Gaff guard for linemen's climbers // Wollensack Clifford Nelson // American Telephone & Telegraph | ||||
| PDF File 2501883.pdf | 1.25 MB | Shaun Ewing | Mar 28, 1950 00:00 |
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US-2501883-A // Electronic frequency control for radio receivers // Weaver Charles Earl // American Telephone & Telegraph | |||
| Version 1 (current) | 1.25 MB | Shaun Ewing | Mar 28, 1950 00:00 | US-2501883-A // Electronic frequency control for radio receivers // Weaver Charles Earl // American Telephone & Telegraph | ||||
| PDF File 2509477.pdf | 481 kB | Shaun Ewing | May 30, 1950 00:00 |
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US-2509477-A // Coin control device for telephone coin collectors // Carson Arthur ; Gassman Kenneth Mackinzie // American Telephone & Telegraph | |||
| Version 1 (current) | 481 kB | Shaun Ewing | May 30, 1950 00:00 | US-2509477-A // Coin control device for telephone coin collectors // Carson Arthur ; Gassman Kenneth Mackinzie // American Telephone & Telegraph | ||||
| PDF File 2513400.pdf | 564 kB | Shaun Ewing | Jul 04, 1950 00:00 |
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US-2513400-A // Digit absorbing selector // Carson Arthur ; Cronk Earle Tabor // American Telephone & Telegraph | |||
| Version 1 (current) | 564 kB | Shaun Ewing | Jul 04, 1950 00:00 | US-2513400-A // Digit absorbing selector // Carson Arthur ; Cronk Earle Tabor // American Telephone & Telegraph | ||||
| PDF File 2522000.pdf | 14.04 MB | Shaun Ewing | Sept 12, 1950 00:00 |
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US-2522000-A // Recording telephone system // Shepherd Judson O'D // American Telephone & Telegraph | |||
| Version 1 (current) | 14.04 MB | Shaun Ewing | Sept 12, 1950 00:00 | US-2522000-A // Recording telephone system // Shepherd Judson O'D // American Telephone & Telegraph | ||||
| PDF File 2522003.pdf | 1.24 MB | Shaun Ewing | Sept 12, 1950 00:00 |
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US-2522003-A // Teletypewriter switching system // Walker Charles Robert // American Telephone & Telegraph | |||
| Version 1 (current) | 1.24 MB | Shaun Ewing | Sept 12, 1950 00:00 | US-2522003-A // Teletypewriter switching system // Walker Charles Robert // American Telephone & Telegraph | ||||
| PDF File 2528269.pdf | 1.64 MB | Shaun Ewing | Oct 31, 1950 00:00 |
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US-2528269-A // Selector switch control for automatic telephone systems // Bois Daniel King Du // American Telephone & Telegraph | |||
| Version 1 (current) | 1.64 MB | Shaun Ewing | Oct 31, 1950 00:00 | US-2528269-A // Selector switch control for automatic telephone systems // Bois Daniel King Du // American Telephone & Telegraph |
