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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| 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 1547232.pdf | 725 kB | Shaun Ewing | Jul 28, 1925 00:00 |
|
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 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 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 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 1548095.pdf | 296 kB | Shaun Ewing | Aug 04, 1925 00:00 |
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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 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 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 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 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 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 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 1548878.pdf | 488 kB | Shaun Ewing | Aug 11, 1925 00:00 |
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US-1548878-A // Electrical signaling system // Gannett Danforth K. ; Kirkwood Maclean // American Telephone & Telegraph | |||
| Version 1 (current) | 488 kB | Shaun Ewing | Aug 11, 1925 00:00 | US-1548878-A // Electrical signaling system // Gannett Danforth K. ; Kirkwood Maclean // American Telephone & Telegraph | ||||
| PDF File 1548895.pdf | 365 kB | Shaun Ewing | Aug 11, 1925 00:00 |
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US-1548895-A // Electrical transmission of pictures // Mertz Pierre // American Telephone & Telegraph | |||
| Version 1 (current) | 365 kB | Shaun Ewing | Aug 11, 1925 00:00 | US-1548895-A // Electrical transmission of pictures // Mertz Pierre // American Telephone & Telegraph | ||||
| PDF File 1549816.pdf | 609 kB | Shaun Ewing | Aug 18, 1925 00:00 |
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US-1549816-A // Program-transmission over wires // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 609 kB | Shaun Ewing | Aug 18, 1925 00:00 | US-1549816-A // Program-transmission over wires // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1549817.pdf | 704 kB | Shaun Ewing | Aug 18, 1925 00:00 |
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US-1549817-A // Trouble-indicating arrangement // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 704 kB | Shaun Ewing | Aug 18, 1925 00:00 | US-1549817-A // Trouble-indicating arrangement // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1549821.pdf | 557 kB | Shaun Ewing | Aug 18, 1925 00:00 |
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US-1549821-A // Printing-telegraph system // Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 557 kB | Shaun Ewing | Aug 18, 1925 00:00 | US-1549821-A // Printing-telegraph system // Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1549849.pdf | 872 kB | Shaun Ewing | Aug 18, 1925 00:00 |
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US-1549849-A // Voice frequency carrier telegraph // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 872 kB | Shaun Ewing | Aug 18, 1925 00:00 | US-1549849-A // Voice frequency carrier telegraph // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1550657.pdf | 908 kB | Shaun Ewing | Aug 25, 1925 00:00 |
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US-1550657-A // Ringing circuits for multiplex signaling // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 908 kB | Shaun Ewing | Aug 25, 1925 00:00 | US-1550657-A // Ringing circuits for multiplex signaling // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1550658.pdf | 476 kB | Shaun Ewing | Aug 25, 1925 00:00 |
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US-1550658-A // Ringing circuits for multiplex signaling // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 476 kB | Shaun Ewing | Aug 25, 1925 00:00 | US-1550658-A // Ringing circuits for multiplex signaling // Affel Herman A. // American Telephone & Telegraph |
