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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1731243.pdf | 503 kB | Shaun Ewing | Oct 15, 1929 00:00 |
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US-1731243-A // Signaling system // Ehrlich Jefferson // American Telephone & Telegraph | |||
| Version 1 (current) | 503 kB | Shaun Ewing | Oct 15, 1929 00:00 | US-1731243-A // Signaling system // Ehrlich Jefferson // American Telephone & Telegraph | ||||
| PDF File 1730402.pdf | 399 kB | Shaun Ewing | Oct 08, 1929 00:00 |
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US-1730402-A // Testing apparatus for electrical circuits // Abbott Henry H. ; Kuhn George W. // American Telephone & Telegraph | |||
| Version 1 (current) | 399 kB | Shaun Ewing | Oct 08, 1929 00:00 | US-1730402-A // Testing apparatus for electrical circuits // Abbott Henry H. ; Kuhn George W. // American Telephone & Telegraph | ||||
| PDF File 1730368.pdf | 258 kB | Shaun Ewing | Oct 08, 1929 00:00 |
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US-1730368-A // Method of and means for measuring differences in time of propagation of wave fronts of different frequencies over a circuit // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 258 kB | Shaun Ewing | Oct 08, 1929 00:00 | US-1730368-A // Method of and means for measuring differences in time of propagation of wave fronts of different frequencies over a circuit // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1729649.pdf | 405 kB | Shaun Ewing | Oct 01, 1929 00:00 |
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US-1729649-A // Program transmission over wires // Toomey John F. ; Phelps Henry E. // American Telephone & Telegraph | |||
| Version 1 (current) | 405 kB | Shaun Ewing | Oct 01, 1929 00:00 | US-1729649-A // Program transmission over wires // Toomey John F. ; Phelps Henry E. // American Telephone & Telegraph | ||||
| PDF File 1729645.pdf | 1.03 MB | Shaun Ewing | Oct 01, 1929 00:00 |
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US-1729645-A // Signaling system // Mertz Pierre // American Telephone & Telegraph | |||
| Version 1 (current) | 1.03 MB | Shaun Ewing | Oct 01, 1929 00:00 | US-1729645-A // Signaling system // Mertz Pierre // American Telephone & Telegraph | ||||
| PDF File 1729644.pdf | 730 kB | Shaun Ewing | Oct 01, 1929 00:00 |
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US-1729644-A // Electrical testing system // Henneberger Thomas C. // American Telephone & Telegraph | |||
| Version 1 (current) | 730 kB | Shaun Ewing | Oct 01, 1929 00:00 | US-1729644-A // Electrical testing system // Henneberger Thomas C. // American Telephone & Telegraph | ||||
| PDF File 1728986.pdf | 270 kB | Shaun Ewing | Sept 24, 1929 00:00 |
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US-1728986-A // Picture-transmission system // Stokes Howard G. // American Telephone & Telegraph | |||
| Version 1 (current) | 270 kB | Shaun Ewing | Sept 24, 1929 00:00 | US-1728986-A // Picture-transmission system // Stokes Howard G. // American Telephone & Telegraph | ||||
| PDF File 1728978.pdf | 592 kB | Shaun Ewing | Sept 24, 1929 00:00 |
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US-1728978-A // Telegraphic transmission of pictures // Parker Ralzemond D. // American Telephone & Telegraph | |||
| Version 1 (current) | 592 kB | Shaun Ewing | Sept 24, 1929 00:00 | US-1728978-A // Telegraphic transmission of pictures // Parker Ralzemond D. // American Telephone & Telegraph | ||||
| PDF File 1728975.pdf | 579 kB | Shaun Ewing | Sept 24, 1929 00:00 |
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US-1728975-A // Premature-disconnect signal for telephone circuits // Morris Robert W. ; Nelson Stanley F. // American Telephone & Telegraph | |||
| Version 1 (current) | 579 kB | Shaun Ewing | Sept 24, 1929 00:00 | US-1728975-A // Premature-disconnect signal for telephone circuits // Morris Robert W. ; Nelson Stanley F. // American Telephone & Telegraph | ||||
| PDF File 1728247.pdf | 561 kB | Shaun Ewing | Sept 17, 1929 00:00 |
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US-1728247-A // Echo suppressor // Mitchell Doren // American Telephone & Telegraph | |||
| Version 1 (current) | 561 kB | Shaun Ewing | Sept 17, 1929 00:00 | US-1728247-A // Echo suppressor // Mitchell Doren // American Telephone & Telegraph | ||||
| PDF File 1728239.pdf | 517 kB | Shaun Ewing | Sept 17, 1929 00:00 |
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US-1728239-A // Arrangement for establishing time intervals // Green Irving W. // American Telephone & Telegraph | |||
| Version 1 (current) | 517 kB | Shaun Ewing | Sept 17, 1929 00:00 | US-1728239-A // Arrangement for establishing time intervals // Green Irving W. // American Telephone & Telegraph | ||||
| PDF File 1728226.pdf | 254 kB | Shaun Ewing | Sept 17, 1929 00:00 |
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US-1728226-A // Telegraph repeater // Branson David E. // American Telephone & Telegraph | |||
| Version 1 (current) | 254 kB | Shaun Ewing | Sept 17, 1929 00:00 | US-1728226-A // Telegraph repeater // Branson David E. // American Telephone & Telegraph | ||||
| PDF File 1727408.pdf | 528 kB | Shaun Ewing | Sept 10, 1929 00:00 |
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US-1727408-A // Control of regeneration in signaling systems // Ohl Russell S. // American Telephone & Telegraph | |||
| Version 1 (current) | 528 kB | Shaun Ewing | Sept 10, 1929 00:00 | US-1727408-A // Control of regeneration in signaling systems // Ohl Russell S. // American Telephone & Telegraph | ||||
| PDF File 1727388.pdf | 282 kB | Shaun Ewing | Sept 10, 1929 00:00 |
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US-1727388-A // High-frequency measuring system // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 282 kB | Shaun Ewing | Sept 10, 1929 00:00 | US-1727388-A // High-frequency measuring system // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1727328.pdf | 230 kB | Shaun Ewing | Sept 10, 1929 00:00 |
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US-1727328-A // High-frequency measuring system // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 230 kB | Shaun Ewing | Sept 10, 1929 00:00 | US-1727328-A // High-frequency measuring system // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1726622.pdf | 490 kB | Shaun Ewing | Sept 03, 1929 00:00 |
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US-1726622-A // Radioreceiver // Holden William H. T. // American Telephone & Telegraph | |||
| Version 1 (current) | 490 kB | Shaun Ewing | Sept 03, 1929 00:00 | US-1726622-A // Radioreceiver // Holden William H. T. // American Telephone & Telegraph | ||||
| PDF File 1726580.pdf | 390 kB | Shaun Ewing | Sept 03, 1929 00:00 |
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US-1726580-A // Thermionic vacuum tube // Ohl Russell S. // American Telephone & Telegraph | |||
| Version 1 (current) | 390 kB | Shaun Ewing | Sept 03, 1929 00:00 | US-1726580-A // Thermionic vacuum tube // Ohl Russell S. // American Telephone & Telegraph | ||||
| PDF File 1726578.pdf | 1.22 MB | Shaun Ewing | Sept 03, 1929 00:00 |
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US-1726578-A // Secret telephone system // Nyquist Harry ; Mertz Pierre // American Telephone & Telegraph | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Sept 03, 1929 00:00 | US-1726578-A // Secret telephone system // Nyquist Harry ; Mertz Pierre // American Telephone & Telegraph | ||||
| PDF File 1725757.pdf | 2.22 MB | Shaun Ewing | Aug 27, 1929 00:00 |
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US-1725757-A // Call-charging telephone-exchange system // Haines William T. // American Telephone & Telegraph | |||
| Version 1 (current) | 2.22 MB | Shaun Ewing | Aug 27, 1929 00:00 | US-1725757-A // Call-charging telephone-exchange system // Haines William T. // American Telephone & Telegraph | ||||
| PDF File 1725756.pdf | 1.19 MB | Shaun Ewing | Aug 27, 1929 00:00 |
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US-1725756-A // Determination of delay by impedance measurements // Gannett Danforth K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Aug 27, 1929 00:00 | US-1725756-A // Determination of delay by impedance measurements // Gannett Danforth K. // American Telephone & Telegraph |
