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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1450969.pdf | 250 kB | Shaun Ewing | Apr 10, 1923 00:00 |
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US-1450969-A // Receiving circuits for weak signal currents // Carson John R. // American Telephone & Telegraph | |||
| Version 1 (current) | 250 kB | Shaun Ewing | Apr 10, 1923 00:00 | US-1450969-A // Receiving circuits for weak signal currents // Carson John R. // American Telephone & Telegraph | ||||
| PDF File 1450966.pdf | 409 kB | Shaun Ewing | Apr 10, 1923 00:00 |
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US-1450966-A // Synchronizing system // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 409 kB | Shaun Ewing | Apr 10, 1923 00:00 | US-1450966-A // Synchronizing system // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1450305.pdf | 644 kB | Shaun Ewing | Apr 03, 1923 00:00 |
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US-1450305-A // Telephone signaling system // Rhodes William A. // American Telephone & Telegraph | |||
| Version 1 (current) | 644 kB | Shaun Ewing | Apr 03, 1923 00:00 | US-1450305-A // Telephone signaling system // Rhodes William A. // American Telephone & Telegraph | ||||
| PDF File 1450254.pdf | 501 kB | Shaun Ewing | Apr 03, 1923 00:00 |
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US-1450254-A // Balancing arrangement for multiplex carrier circuits // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 501 kB | Shaun Ewing | Apr 03, 1923 00:00 | US-1450254-A // Balancing arrangement for multiplex carrier circuits // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1449945.pdf | 206 kB | Shaun Ewing | Mar 27, 1923 00:00 |
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US-1449945-A // Wire grip // Jacobsen Morris // American Telephone & Telegraph | |||
| Version 1 (current) | 206 kB | Shaun Ewing | Mar 27, 1923 00:00 | US-1449945-A // Wire grip // Jacobsen Morris // American Telephone & Telegraph | ||||
| PDF File 1449382.pdf | 2.17 MB | Shaun Ewing | Mar 27, 1923 00:00 |
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US-1449382-A // Method and means for signaling with high-frequency waves // Carson John R. // American Telephone & Telegraph | |||
| Version 1 (current) | 2.17 MB | Shaun Ewing | Mar 27, 1923 00:00 | US-1449382-A // Method and means for signaling with high-frequency waves // Carson John R. // American Telephone & Telegraph | ||||
| PDF File 1448702.pdf | 559 kB | Shaun Ewing | Mar 13, 1923 00:00 |
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US-1448702-A // Translating circuits // Carson John R. // American Telephone & Telegraph | |||
| Version 1 (current) | 559 kB | Shaun Ewing | Mar 13, 1923 00:00 | US-1448702-A // Translating circuits // Carson John R. // American Telephone & Telegraph | ||||
| PDF File 1448116.pdf | 235 kB | Shaun Ewing | Mar 13, 1923 00:00 |
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US-1448116-A // Connector for electrical conductors // Haislip Richard A. ; Matthews Edgar M. // American Telephone & Telegraph | |||
| Version 1 (current) | 235 kB | Shaun Ewing | Mar 13, 1923 00:00 | US-1448116-A // Connector for electrical conductors // Haislip Richard A. ; Matthews Edgar M. // American Telephone & Telegraph | ||||
| PDF File 1447773.pdf | 534 kB | Shaun Ewing | Mar 06, 1923 00:00 |
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US-1447773-A // Radio transmission control system // Espenschied Lloyd ; Bown Ralph // American Telephone & Telegraph | |||
| Version 1 (current) | 534 kB | Shaun Ewing | Mar 06, 1923 00:00 | US-1447773-A // Radio transmission control system // Espenschied Lloyd ; Bown Ralph // American Telephone & Telegraph | ||||
| PDF File 1447204.pdf | 1.81 MB | Shaun Ewing | Mar 06, 1923 00:00 |
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US-1447204-A // Plural modulation and demodulation circuits // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 1.81 MB | Shaun Ewing | Mar 06, 1923 00:00 | US-1447204-A // Plural modulation and demodulation circuits // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1446526.pdf | 372 kB | Shaun Ewing | Feb 27, 1923 00:00 |
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US-1446526-A // Ringing regulator // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 372 kB | Shaun Ewing | Feb 27, 1923 00:00 | US-1446526-A // Ringing regulator // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1445759.pdf | 2.04 MB | Shaun Ewing | Feb 20, 1923 00:00 |
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US-1445759-A // Means for and method of testing multiplex carrier circuits // Jr. John Davidson, // American Telephone & Telegraph | |||
| Version 1 (current) | 2.04 MB | Shaun Ewing | Feb 20, 1923 00:00 | US-1445759-A // Means for and method of testing multiplex carrier circuits // Jr. John Davidson, // American Telephone & Telegraph | ||||
| PDF File 1444830.pdf | 864 kB | Shaun Ewing | Feb 13, 1923 00:00 |
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US-1444830-A // Transmission-controlling apparatus // Demarest Charles S. // American Telephone & Telegraph | |||
| Version 1 (current) | 864 kB | Shaun Ewing | Feb 13, 1923 00:00 | US-1444830-A // Transmission-controlling apparatus // Demarest Charles S. // American Telephone & Telegraph | ||||
| PDF File 1443985.pdf | 347 kB | Shaun Ewing | Feb 06, 1923 00:00 |
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US-1443985-A // Signaling system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 347 kB | Shaun Ewing | Feb 06, 1923 00:00 | US-1443985-A // Signaling system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1442819.pdf | 624 kB | Shaun Ewing | Jan 23, 1923 00:00 |
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US-1442819-A // Ciphering machine // Parker Ralzemond D. // American Telephone & Telegraph | |||
| Version 1 (current) | 624 kB | Shaun Ewing | Jan 23, 1923 00:00 | US-1442819-A // Ciphering machine // Parker Ralzemond D. // American Telephone & Telegraph | ||||
| PDF File 1441827.pdf | 790 kB | Shaun Ewing | Jan 09, 1923 00:00 |
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US-1441827-A // Signaling system // Blackwell Otto B. // American Telephone & Telegraph | |||
| Version 1 (current) | 790 kB | Shaun Ewing | Jan 09, 1923 00:00 | US-1441827-A // Signaling system // Blackwell Otto B. // American Telephone & Telegraph | ||||
| PDF File 1441270.pdf | 421 kB | Shaun Ewing | Jan 09, 1923 00:00 |
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US-1441270-A // Transmission system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 421 kB | Shaun Ewing | Jan 09, 1923 00:00 | US-1441270-A // Transmission system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1440407.pdf | 253 kB | Shaun Ewing | Jan 02, 1923 00:00 |
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US-1440407-A // Detecting ciscuits // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 253 kB | Shaun Ewing | Jan 02, 1923 00:00 | US-1440407-A // Detecting ciscuits // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 1439772.pdf | 576 kB | Shaun Ewing | Dec 26, 1922 00:00 |
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US-1439772-A // Signaling apparatus and circuits // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 576 kB | Shaun Ewing | Dec 26, 1922 00:00 | US-1439772-A // Signaling apparatus and circuits // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1439723.pdf | 468 kB | Shaun Ewing | Dec 26, 1922 00:00 |
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US-1439723-A // Numbering system for automatic telephone exchanges // Blauvelt William G. // American Telephone & Telegraph | |||
| Version 1 (current) | 468 kB | Shaun Ewing | Dec 26, 1922 00:00 | US-1439723-A // Numbering system for automatic telephone exchanges // Blauvelt William G. // American Telephone & Telegraph |
