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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1431921.pdf | 466 kB | Shaun Ewing | Oct 17, 1922 00:00 |
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US-1431921-A // Brake for rolling ladders // Barnes Harry F. // American Telephone & Telegraph | |||
| Version 1 (current) | 466 kB | Shaun Ewing | Oct 17, 1922 00:00 | US-1431921-A // Brake for rolling ladders // Barnes Harry F. // American Telephone & Telegraph | ||||
| PDF File 1431219.pdf | 615 kB | Shaun Ewing | Oct 10, 1922 00:00 |
|
US-1431219-A // Electron-tube repeater // Crisson George // American Telephone & Telegraph | |||
| Version 1 (current) | 615 kB | Shaun Ewing | Oct 10, 1922 00:00 | US-1431219-A // Electron-tube repeater // Crisson George // American Telephone & Telegraph | ||||
| PDF File 1431195.pdf | 1.21 MB | Shaun Ewing | Oct 10, 1922 00:00 |
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US-1431195-A // Telephone-exchange system // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Oct 10, 1922 00:00 | US-1431195-A // Telephone-exchange system // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1430808.pdf | 886 kB | Shaun Ewing | Oct 03, 1922 00:00 |
|
US-1430808-A // Two-way impedance equalizer for transformers // Hoyt Ray S. // American Telephone & Telegraph | |||
| Version 1 (current) | 886 kB | Shaun Ewing | Oct 03, 1922 00:00 | US-1430808-A // Two-way impedance equalizer for transformers // Hoyt Ray S. // American Telephone & Telegraph | ||||
| PDF File 1430531.pdf | 251 kB | Shaun Ewing | Oct 03, 1922 00:00 |
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US-1430531-A // Apparatus for molding // Berryman David // American Telephone & Telegraph | |||
| Version 1 (current) | 251 kB | Shaun Ewing | Oct 03, 1922 00:00 | US-1430531-A // Apparatus for molding // Berryman David // American Telephone & Telegraph | ||||
| PDF File 1429972.pdf | 1.13 MB | Shaun Ewing | Sept 26, 1922 00:00 |
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US-1429972-A // Desk operator's circuits // Rhodes William A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.13 MB | Shaun Ewing | Sept 26, 1922 00:00 | US-1429972-A // Desk operator's circuits // Rhodes William A. // American Telephone & Telegraph | ||||
| PDF File 1429931.pdf | 2.46 MB | Shaun Ewing | Sept 26, 1922 00:00 |
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US-1429931-A // Signaling circuits for toll lines // Jr. John Davidson, // American Telephone & Telegraph | |||
| Version 1 (current) | 2.46 MB | Shaun Ewing | Sept 26, 1922 00:00 | US-1429931-A // Signaling circuits for toll lines // Jr. John Davidson, // American Telephone & Telegraph | ||||
| PDF File 1429264.pdf | 318 kB | Shaun Ewing | Sept 19, 1922 00:00 |
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US-1429264-A // Calculating guy rule // Wright John W. // American Telephone & Telegraph | |||
| Version 1 (current) | 318 kB | Shaun Ewing | Sept 19, 1922 00:00 | US-1429264-A // Calculating guy rule // Wright John W. // American Telephone & Telegraph | ||||
| PDF File 1429248.pdf | 647 kB | Shaun Ewing | Sept 19, 1922 00:00 |
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US-1429248-A // Multiplex signaling system // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 647 kB | Shaun Ewing | Sept 19, 1922 00:00 | US-1429248-A // Multiplex signaling system // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 1428667.pdf | 865 kB | Shaun Ewing | Sept 12, 1922 00:00 |
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US-1428667-A // Testing and adjusting apparatus for cord circuits // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 865 kB | Shaun Ewing | Sept 12, 1922 00:00 | US-1428667-A // Testing and adjusting apparatus for cord circuits // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1428631.pdf | 873 kB | Shaun Ewing | Sept 12, 1922 00:00 |
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US-1428631-A // Testing and adjusting apparatus for cord circuits // Harrison William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 873 kB | Shaun Ewing | Sept 12, 1922 00:00 | US-1428631-A // Testing and adjusting apparatus for cord circuits // Harrison William H. // American Telephone & Telegraph | ||||
| PDF File 1428156.pdf | 386 kB | Shaun Ewing | Sept 05, 1922 00:00 |
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US-1428156-A // Low-frequency amplifier // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 386 kB | Shaun Ewing | Sept 05, 1922 00:00 | US-1428156-A // Low-frequency amplifier // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1427923.pdf | 646 kB | Shaun Ewing | Sept 05, 1922 00:00 |
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US-1427923-A // Telephone-call circuits // Toomey John F. ; Loynes Owen H. // American Telephone & Telegraph | |||
| Version 1 (current) | 646 kB | Shaun Ewing | Sept 05, 1922 00:00 | US-1427923-A // Telephone-call circuits // Toomey John F. ; Loynes Owen H. // American Telephone & Telegraph | ||||
| PDF File 1427725.pdf | 696 kB | Shaun Ewing | Aug 29, 1922 00:00 |
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US-1427725-A // Switchboard call-signal apparatus and circuits // Cooper Lester W. // American Telephone & Telegraph | |||
| Version 1 (current) | 696 kB | Shaun Ewing | Aug 29, 1922 00:00 | US-1427725-A // Switchboard call-signal apparatus and circuits // Cooper Lester W. // American Telephone & Telegraph | ||||
| PDF File 1427695.pdf | 813 kB | Shaun Ewing | Aug 29, 1922 00:00 |
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US-1427695-A // Switchboard call-signal apparatus and circuits // Morris Robert W. // American Telephone & Telegraph | |||
| Version 1 (current) | 813 kB | Shaun Ewing | Aug 29, 1922 00:00 | US-1427695-A // Switchboard call-signal apparatus and circuits // Morris Robert W. // American Telephone & Telegraph | ||||
| PDF File 1426669.pdf | 584 kB | Shaun Ewing | Aug 22, 1922 00:00 |
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US-1426669-A // Ciphering device // Pierce Ralph E. // American Telephone & Telegraph | |||
| Version 1 (current) | 584 kB | Shaun Ewing | Aug 22, 1922 00:00 | US-1426669-A // Ciphering device // Pierce Ralph E. // American Telephone & Telegraph | ||||
| PDF File 1423518.pdf | 304 kB | Shaun Ewing | Jul 25, 1922 00:00 |
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US-1423518-A // Frequency regulator // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 304 kB | Shaun Ewing | Jul 25, 1922 00:00 | US-1423518-A // Frequency regulator // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1422470.pdf | 527 kB | Shaun Ewing | Jul 11, 1922 00:00 |
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US-1422470-A // Inductive-interference-suppression device // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 527 kB | Shaun Ewing | Jul 11, 1922 00:00 | US-1422470-A // Inductive-interference-suppression device // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 1421702.pdf | 424 kB | Shaun Ewing | Jul 04, 1922 00:00 |
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US-1421702-A // Testing apparatus // Mccurdy Ralph G. // American Telephone & Telegraph | |||
| Version 1 (current) | 424 kB | Shaun Ewing | Jul 04, 1922 00:00 | US-1421702-A // Testing apparatus // Mccurdy Ralph G. // American Telephone & Telegraph | ||||
| PDF File 1420487.pdf | 141 kB | Shaun Ewing | Jun 20, 1922 00:00 |
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US-1420487-A // Hook // Kent Robert J. // American Telephone & Telegraph | |||
| Version 1 (current) | 141 kB | Shaun Ewing | Jun 20, 1922 00:00 | US-1420487-A // Hook // Kent Robert J. // American Telephone & Telegraph |
