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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1541880.pdf | 827 kB | Shaun Ewing | Jun 16, 1925 00:00 |
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US-1541880-A // Single polar telegraph circuits // Watson Edward F. // American Telephone & Telegraph | |||
| Version 1 (current) | 827 kB | Shaun Ewing | Jun 16, 1925 00:00 | US-1541880-A // Single polar telegraph circuits // Watson Edward F. // American Telephone & Telegraph | ||||
| PDF File 1541881.pdf | 870 kB | Shaun Ewing | Jun 16, 1925 00:00 |
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US-1541881-A // Single polar telegraph circuits // Watson Edward F. // American Telephone & Telegraph | |||
| Version 1 (current) | 870 kB | Shaun Ewing | Jun 16, 1925 00:00 | US-1541881-A // Single polar telegraph circuits // Watson Edward F. // American Telephone & Telegraph | ||||
| PDF File 1542849.pdf | 595 kB | Shaun Ewing | Jun 23, 1925 00:00 |
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US-1542849-A // Signaling system // Bascom Henry M. // American Telephone & Telegraph | |||
| Version 1 (current) | 595 kB | Shaun Ewing | Jun 23, 1925 00:00 | US-1542849-A // Signaling system // Bascom Henry M. // American Telephone & Telegraph | ||||
| PDF File 1542922.pdf | 272 kB | Shaun Ewing | Jun 23, 1925 00:00 |
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US-1542922-A // Telephone receiver // Thompson George K. // American Telephone & Telegraph | |||
| Version 1 (current) | 272 kB | Shaun Ewing | Jun 23, 1925 00:00 | US-1542922-A // Telephone receiver // Thompson George K. // American Telephone & Telegraph | ||||
| PDF File 1543772.pdf | 515 kB | Shaun Ewing | Jun 30, 1925 00:00 |
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US-1543772-A // Apparatus for neutralizing radiointerference on wire lines // Hunter Russell N. // American Telephone & Telegraph | |||
| Version 1 (current) | 515 kB | Shaun Ewing | Jun 30, 1925 00:00 | US-1543772-A // Apparatus for neutralizing radiointerference on wire lines // Hunter Russell N. // American Telephone & Telegraph | ||||
| PDF File 1543775.pdf | 438 kB | Shaun Ewing | Jun 30, 1925 00:00 |
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US-1543775-A // Apparatus for neutralizing radiointerference on wire lines // Ilgenfritz Lester M. // American Telephone & Telegraph | |||
| Version 1 (current) | 438 kB | Shaun Ewing | Jun 30, 1925 00:00 | US-1543775-A // Apparatus for neutralizing radiointerference on wire lines // Ilgenfritz Lester M. // American Telephone & Telegraph | ||||
| PDF File 1543789.pdf | 651 kB | Shaun Ewing | Jun 30, 1925 00:00 |
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US-1543789-A // Printing-telegraph exchange system // Parker Ralzemond D. ; Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 651 kB | Shaun Ewing | Jun 30, 1925 00:00 | US-1543789-A // Printing-telegraph exchange system // Parker Ralzemond D. ; Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1544622.pdf | 427 kB | Shaun Ewing | Jul 07, 1925 00:00 |
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US-1544622-A // Elimination of interference in carrier systems // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 427 kB | Shaun Ewing | Jul 07, 1925 00:00 | US-1544622-A // Elimination of interference in carrier systems // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1544638.pdf | 414 kB | Shaun Ewing | Jul 07, 1925 00:00 |
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US-1544638-A // Telegraph signaling system // Fell John M. // American Telephone & Telegraph | |||
| Version 1 (current) | 414 kB | Shaun Ewing | Jul 07, 1925 00:00 | US-1544638-A // Telegraph signaling system // Fell John M. // American Telephone & Telegraph | ||||
| PDF File 1544737.pdf | 430 kB | Shaun Ewing | Jul 07, 1925 00:00 |
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US-1544737-A // Elimination of interference in carrier systems // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 430 kB | Shaun Ewing | Jul 07, 1925 00:00 | US-1544737-A // Elimination of interference in carrier systems // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1545541.pdf | 356 kB | Shaun Ewing | Jul 14, 1925 00:00 |
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US-1545541-A // Tandem-operated echo suppressor // Wright Sumner B. // American Telephone & Telegraph | |||
| Version 1 (current) | 356 kB | Shaun Ewing | Jul 14, 1925 00:00 | US-1545541-A // Tandem-operated echo suppressor // Wright Sumner B. // American Telephone & Telegraph | ||||
| PDF File 1545549.pdf | 270 kB | Shaun Ewing | Jul 14, 1925 00:00 |
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US-1545549-A // Tandem-operated echo suppressor // Child Bradley L. // American Telephone & Telegraph | |||
| Version 1 (current) | 270 kB | Shaun Ewing | Jul 14, 1925 00:00 | US-1545549-A // Tandem-operated echo suppressor // Child Bradley L. // American Telephone & Telegraph | ||||
| PDF File 1545558.pdf | 616 kB | Shaun Ewing | Jul 14, 1925 00:00 |
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US-1545558-A // Tandem-operated echo suppressor // Hamilton Harold S. ; Wright Sumner B. // American Telephone & Telegraph | |||
| Version 1 (current) | 616 kB | Shaun Ewing | Jul 14, 1925 00:00 | US-1545558-A // Tandem-operated echo suppressor // Hamilton Harold S. ; Wright Sumner B. // American Telephone & Telegraph | ||||
| PDF File 1546392.pdf | 226 kB | Shaun Ewing | Jul 21, 1925 00:00 |
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US-1546392-A // Testing apparatus // Mccurdy Ralph G. // American Telephone & Telegraph | |||
| Version 1 (current) | 226 kB | Shaun Ewing | Jul 21, 1925 00:00 | US-1546392-A // Testing apparatus // Mccurdy Ralph G. // American Telephone & Telegraph | ||||
| PDF File 1546395.pdf | 209 kB | Shaun Ewing | Jul 21, 1925 00:00 |
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US-1546395-A // Duplex signaling system // Martin William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 209 kB | Shaun Ewing | Jul 21, 1925 00:00 | US-1546395-A // Duplex signaling system // Martin William H. // American Telephone & Telegraph | ||||
| PDF File 1546427.pdf | 822 kB | Shaun Ewing | Jul 21, 1925 00:00 |
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US-1546427-A // Auxiliary signaling circuits // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 822 kB | Shaun Ewing | Jul 21, 1925 00:00 | US-1546427-A // Auxiliary signaling circuits // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1546432.pdf | 332 kB | Shaun Ewing | Jul 21, 1925 00:00 |
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US-1546432-A // Relay and circuits therefor // Branson David E. // American Telephone & Telegraph | |||
| Version 1 (current) | 332 kB | Shaun Ewing | Jul 21, 1925 00:00 | US-1546432-A // Relay and circuits therefor // Branson David E. // American Telephone & Telegraph | ||||
| PDF File 1546439.pdf | 871 kB | Shaun Ewing | Jul 21, 1925 00:00 |
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US-1546439-A // Secret telephone system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 871 kB | Shaun Ewing | Jul 21, 1925 00:00 | US-1546439-A // Secret telephone system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1547217.pdf | 331 kB | Shaun Ewing | Jul 28, 1925 00:00 |
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US-1547217-A // Phase regulator for multifrequency generators // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 331 kB | Shaun Ewing | Jul 28, 1925 00:00 | US-1547217-A // Phase regulator for multifrequency generators // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1547226.pdf | 498 kB | Shaun Ewing | Jul 28, 1925 00:00 |
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US-1547226-A // Signaling // Martin William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 498 kB | Shaun Ewing | Jul 28, 1925 00:00 | US-1547226-A // Signaling // Martin William H. // American Telephone & Telegraph |
