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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1759952.pdf | 354 kB | Shaun Ewing | May 27, 1930 00:00 |
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US-1759952-A // Electrical transmission system // Mccurdy Ralph G. // American Telephone & Telegraph | |||
| Version 1 (current) | 354 kB | Shaun Ewing | May 27, 1930 00:00 | US-1759952-A // Electrical transmission system // Mccurdy Ralph G. // American Telephone & Telegraph | ||||
| PDF File 1656250.pdf | 353 kB | Shaun Ewing | Jan 17, 1928 00:00 |
|
US-1656250-A // Alternating-current relay // Thompson Elmer O. ; Grimes David ; Fisher Henry C. // American Telephone & Telegraph | |||
| Version 1 (current) | 353 kB | Shaun Ewing | Jan 17, 1928 00:00 | US-1656250-A // Alternating-current relay // Thompson Elmer O. ; Grimes David ; Fisher Henry C. // American Telephone & Telegraph | ||||
| PDF File 1706472.pdf | 353 kB | Shaun Ewing | Mar 26, 1929 00:00 |
|
US-1706472-A // Echo suppressor // Wright Sumner B. // American Telephone & Telegraph | |||
| Version 1 (current) | 353 kB | Shaun Ewing | Mar 26, 1929 00:00 | US-1706472-A // Echo suppressor // Wright Sumner B. // American Telephone & Telegraph | ||||
| PDF File 1630293.pdf | 352 kB | Shaun Ewing | May 31, 1927 00:00 |
|
US-1630293-A // Step for poles // Fish Lewin B. // American Telephone & Telegraph | |||
| Version 1 (current) | 352 kB | Shaun Ewing | May 31, 1927 00:00 | US-1630293-A // Step for poles // Fish Lewin B. // American Telephone & Telegraph | ||||
| PDF File 1648974.pdf | 352 kB | Shaun Ewing | Nov 15, 1927 00:00 |
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US-1648974-A // Printing-telegraph-exchange system // Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Nov 15, 1927 00:00 | US-1648974-A // Printing-telegraph-exchange system // Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1691091.pdf | 352 kB | Shaun Ewing | Nov 13, 1928 00:00 |
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US-1691091-A // Alternating-current relay // Thompson Elmer O. // American Telephone & Telegraph | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Nov 13, 1928 00:00 | US-1691091-A // Alternating-current relay // Thompson Elmer O. // American Telephone & Telegraph | ||||
| PDF File 1615219.pdf | 352 kB | Shaun Ewing | Jan 25, 1927 00:00 |
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US-1615219-A // Telephone switchboard cord terminal test connecter // Franfield John C. // American Telephone & Telegraph | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Jan 25, 1927 00:00 | US-1615219-A // Telephone switchboard cord terminal test connecter // Franfield John C. // American Telephone & Telegraph | ||||
| PDF File 1438989.pdf | 352 kB | Shaun Ewing | Dec 19, 1922 00:00 |
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US-1438989-A // High-frequency translating circuits // Espenschied Lloyd ; Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Dec 19, 1922 00:00 | US-1438989-A // High-frequency translating circuits // Espenschied Lloyd ; Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1615259.pdf | 352 kB | Shaun Ewing | Jan 25, 1927 00:00 |
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US-1615259-A // Telephone repeater system // Clark Alva B. // American Telephone & Telegraph | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Jan 25, 1927 00:00 | US-1615259-A // Telephone repeater system // Clark Alva B. // American Telephone & Telegraph | ||||
| PDF File 1607668.pdf | 352 kB | Shaun Ewing | Nov 23, 1926 00:00 |
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US-1607668-A // Carrier transmission over power circuits // Fetter Charles H. // American Telephone & Telegraph | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Nov 23, 1926 00:00 | US-1607668-A // Carrier transmission over power circuits // Fetter Charles H. // American Telephone & Telegraph | ||||
| PDF File 1523488.pdf | 351 kB | Shaun Ewing | Jan 20, 1925 00:00 |
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US-1523488-A // Telegraph signal circuits // Moore Robert P. // American Telephone & Telegraph | |||
| Version 1 (current) | 351 kB | Shaun Ewing | Jan 20, 1925 00:00 | US-1523488-A // Telegraph signal circuits // Moore Robert P. // American Telephone & Telegraph | ||||
| PDF File 1569905.pdf | 351 kB | Shaun Ewing | Jan 19, 1926 00:00 |
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US-1569905-A // Method and apparatus for neutralizing radiointerference on wire lines // Affel Herman A. ; Ilgenfritz Lester M. // American Telephone & Telegraph | |||
| Version 1 (current) | 351 kB | Shaun Ewing | Jan 19, 1926 00:00 | US-1569905-A // Method and apparatus for neutralizing radiointerference on wire lines // Affel Herman A. ; Ilgenfritz Lester M. // American Telephone & Telegraph | ||||
| PDF File 1636737.pdf | 350 kB | Shaun Ewing | Jul 26, 1927 00:00 |
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US-1636737-A // Electrical wave filter // Dietze Eginhard // American Telephone & Telegraph | |||
| Version 1 (current) | 350 kB | Shaun Ewing | Jul 26, 1927 00:00 | US-1636737-A // Electrical wave filter // Dietze Eginhard // American Telephone & Telegraph | ||||
| PDF File 1586633.pdf | 350 kB | Shaun Ewing | Jun 01, 1926 00:00 |
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US-1586633-A // Drainage method for four-wire-cable systems // Mccurdy Ralph G. // American Telephone & Telegraph | |||
| Version 1 (current) | 350 kB | Shaun Ewing | Jun 01, 1926 00:00 | US-1586633-A // Drainage method for four-wire-cable systems // Mccurdy Ralph G. // American Telephone & Telegraph | ||||
| PDF File 1652239.pdf | 350 kB | Shaun Ewing | Dec 13, 1927 00:00 |
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US-1652239-A // Coin collector // Edwards William H. ; Tucker Rexford S. // American Telephone & Telegraph | |||
| Version 1 (current) | 350 kB | Shaun Ewing | Dec 13, 1927 00:00 | US-1652239-A // Coin collector // Edwards William H. ; Tucker Rexford S. // American Telephone & Telegraph | ||||
| PDF File 1676252.pdf | 350 kB | Shaun Ewing | Jul 10, 1928 00:00 |
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US-1676252-A // Multiple-channel radioreceiver // Coxhead Harry B. // American Telephone & Telegraph | |||
| Version 1 (current) | 350 kB | Shaun Ewing | Jul 10, 1928 00:00 | US-1676252-A // Multiple-channel radioreceiver // Coxhead Harry B. // American Telephone & Telegraph | ||||
| PDF File 1634299.pdf | 348 kB | Shaun Ewing | Jul 05, 1927 00:00 |
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US-1634299-A // Telegraph circuits // Parker Ralzemond D. // American Telephone & Telegraph | |||
| Version 1 (current) | 348 kB | Shaun Ewing | Jul 05, 1927 00:00 | US-1634299-A // Telegraph circuits // Parker Ralzemond D. // American Telephone & Telegraph | ||||
| PDF File 1507160.pdf | 348 kB | Shaun Ewing | Sept 02, 1924 00:00 |
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US-1507160-A // Pilot-wire regulator system // Crisson George // American Telephone & Telegraph | |||
| Version 1 (current) | 348 kB | Shaun Ewing | Sept 02, 1924 00:00 | US-1507160-A // Pilot-wire regulator system // Crisson George // American Telephone & Telegraph | ||||
| PDF File 1672057.pdf | 348 kB | Shaun Ewing | Jun 05, 1928 00:00 |
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US-1672057-A // Electrical circuits // Clark Alva Benson // American Telephone & Telegraph | |||
| Version 1 (current) | 348 kB | Shaun Ewing | Jun 05, 1928 00:00 | US-1672057-A // Electrical circuits // Clark Alva Benson // American Telephone & Telegraph | ||||
| PDF File 1588450.pdf | 348 kB | Shaun Ewing | Jun 15, 1926 00:00 |
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US-1588450-A // Telegraph system // Cory Samuel I. // American Telephone & Telegraph | |||
| Version 1 (current) | 348 kB | Shaun Ewing | Jun 15, 1926 00:00 | US-1588450-A // Telegraph system // Cory Samuel I. // American Telephone & Telegraph |
