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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1548874.pdf | 474 kB | Shaun Ewing | Aug 11, 1925 00:00 |
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US-1548874-A // Telegraph signaling system // Fell John M. ; Pierce Ralph E. // American Telephone & Telegraph | |||
| Version 1 (current) | 474 kB | Shaun Ewing | Aug 11, 1925 00:00 | US-1548874-A // Telegraph signaling system // Fell John M. ; Pierce Ralph E. // American Telephone & Telegraph | ||||
| PDF File 1548873.pdf | 618 kB | Shaun Ewing | Aug 11, 1925 00:00 |
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US-1548873-A // Telegraph signaling system // Fell John M. // American Telephone & Telegraph | |||
| Version 1 (current) | 618 kB | Shaun Ewing | Aug 11, 1925 00:00 | US-1548873-A // Telegraph signaling system // Fell John M. // American Telephone & Telegraph | ||||
| PDF File 1548862.pdf | 547 kB | Shaun Ewing | Aug 11, 1925 00:00 |
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US-1548862-A // Interference-neutralizing arrangement // Blackwell Otto B. // American Telephone & Telegraph | |||
| Version 1 (current) | 547 kB | Shaun Ewing | Aug 11, 1925 00:00 | US-1548862-A // Interference-neutralizing arrangement // Blackwell Otto B. // American Telephone & Telegraph | ||||
| PDF File 1548260.pdf | 1.22 MB | Shaun Ewing | Aug 04, 1925 00:00 |
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US-1548260-A // Multiplex system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Aug 04, 1925 00:00 | US-1548260-A // Multiplex system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1548119.pdf | 265 kB | Shaun Ewing | Aug 04, 1925 00:00 |
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US-1548119-A // Busy-test circuit for telephone cord circuits // Dietze Eginhard // American Telephone & Telegraph | |||
| Version 1 (current) | 265 kB | Shaun Ewing | Aug 04, 1925 00:00 | US-1548119-A // Busy-test circuit for telephone cord circuits // Dietze Eginhard // American Telephone & Telegraph | ||||
| PDF File 1548110.pdf | 1.80 MB | Shaun Ewing | Aug 04, 1925 00:00 |
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US-1548110-A // Telephone toll circuits // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.80 MB | Shaun Ewing | Aug 04, 1925 00:00 | US-1548110-A // Telephone toll circuits // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1548095.pdf | 296 kB | Shaun Ewing | Aug 04, 1925 00:00 |
|
US-1548095-A // Vacuum-tube translating device // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 296 kB | Shaun Ewing | Aug 04, 1925 00:00 | US-1548095-A // Vacuum-tube translating device // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 1548088.pdf | 464 kB | Shaun Ewing | Aug 04, 1925 00:00 |
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US-1548088-A // Telegraph circuits // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 464 kB | Shaun Ewing | Aug 04, 1925 00:00 | US-1548088-A // Telegraph circuits // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1548059.pdf | 805 kB | Shaun Ewing | Aug 04, 1925 00:00 |
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US-1548059-A // Electrical testing system // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 805 kB | Shaun Ewing | Aug 04, 1925 00:00 | US-1548059-A // Electrical testing system // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1547242.pdf | 430 kB | Shaun Ewing | Jul 28, 1925 00:00 |
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US-1547242-A // Carrier transmission over power circuits // Strieby Maurice E. // American Telephone & Telegraph | |||
| Version 1 (current) | 430 kB | Shaun Ewing | Jul 28, 1925 00:00 | US-1547242-A // Carrier transmission over power circuits // Strieby Maurice E. // American Telephone & Telegraph | ||||
| PDF File 1547232.pdf | 725 kB | Shaun Ewing | Jul 28, 1925 00:00 |
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US-1547232-A // Multiplex signaling system // Parker Ralzemond D. // American Telephone & Telegraph | |||
| Version 1 (current) | 725 kB | Shaun Ewing | Jul 28, 1925 00:00 | US-1547232-A // Multiplex signaling system // Parker Ralzemond D. // American Telephone & Telegraph | ||||
| PDF File 1547227.pdf | 508 kB | Shaun Ewing | Jul 28, 1925 00:00 |
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US-1547227-A // Telegraph signaling system // Mitchiner James I. // American Telephone & Telegraph | |||
| Version 1 (current) | 508 kB | Shaun Ewing | Jul 28, 1925 00:00 | US-1547227-A // Telegraph signaling system // Mitchiner James I. // 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 | ||||
| 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 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 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 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 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 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 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 |
