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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1722283.pdf | 358 kB | Shaun Ewing | Jul 30, 1929 00:00 |
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US-1722283-A // Telegraph system // Eyster James A. // American Telephone & Telegraph | |||
| Version 1 (current) | 358 kB | Shaun Ewing | Jul 30, 1929 00:00 | US-1722283-A // Telegraph system // Eyster James A. // American Telephone & Telegraph | ||||
| PDF File 1723123.pdf | 531 kB | Shaun Ewing | Aug 06, 1929 00:00 |
|
US-1723123-A // Telephone system // Bascom Henry M. // American Telephone & Telegraph | |||
| Version 1 (current) | 531 kB | Shaun Ewing | Aug 06, 1929 00:00 | US-1723123-A // Telephone system // Bascom Henry M. // American Telephone & Telegraph | ||||
| PDF File 1723153.pdf | 474 kB | Shaun Ewing | Aug 06, 1929 00:00 |
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US-1723153-A // Telephone system // Green Irving W. // American Telephone & Telegraph | |||
| Version 1 (current) | 474 kB | Shaun Ewing | Aug 06, 1929 00:00 | US-1723153-A // Telephone system // Green Irving W. // American Telephone & Telegraph | ||||
| PDF File 1723220.pdf | 448 kB | Shaun Ewing | Aug 06, 1929 00:00 |
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US-1723220-A // Carrier-telegraph alarm system // Thorp Vaughn P. // American Telephone & Telegraph | |||
| Version 1 (current) | 448 kB | Shaun Ewing | Aug 06, 1929 00:00 | US-1723220-A // Carrier-telegraph alarm system // Thorp Vaughn P. // American Telephone & Telegraph | ||||
| PDF File 1724019.pdf | 542 kB | Shaun Ewing | Aug 13, 1929 00:00 |
|
US-1724019-A // Radio receiving system // Harper Augustus E. // American Telephone & Telegraph | |||
| Version 1 (current) | 542 kB | Shaun Ewing | Aug 13, 1929 00:00 | US-1724019-A // Radio receiving system // Harper Augustus E. // American Telephone & Telegraph | ||||
| PDF File 1724057.pdf | 684 kB | Shaun Ewing | Aug 13, 1929 00:00 |
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US-1724057-A // Radio receiving set // Weaver Allan ; Chase Fay Harold // American Telephone & Telegraph | |||
| Version 1 (current) | 684 kB | Shaun Ewing | Aug 13, 1929 00:00 | US-1724057-A // Radio receiving set // Weaver Allan ; Chase Fay Harold // American Telephone & Telegraph | ||||
| PDF File 1724082.pdf | 362 kB | Shaun Ewing | Aug 13, 1929 00:00 |
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US-1724082-A // Means to control cross talk // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 362 kB | Shaun Ewing | Aug 13, 1929 00:00 | US-1724082-A // Means to control cross talk // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1724898.pdf | 479 kB | Shaun Ewing | Aug 20, 1929 00:00 |
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US-1724898-A // Telephone system // Bailey Rand S. ; Eagon Lloyd L. // American Telephone & Telegraph | |||
| Version 1 (current) | 479 kB | Shaun Ewing | Aug 20, 1929 00:00 | US-1724898-A // Telephone system // Bailey Rand S. ; Eagon Lloyd L. // American Telephone & Telegraph | ||||
| PDF File 1724925.pdf | 447 kB | Shaun Ewing | Aug 20, 1929 00:00 |
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US-1724925-A // Carrier-signaling system // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Aug 20, 1929 00:00 | US-1724925-A // Carrier-signaling system // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1724987.pdf | 529 kB | Shaun Ewing | Aug 20, 1929 00:00 |
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US-1724987-A // Selective-constant-resistance network // Zobel Otto J. // American Telephone & Telegraph | |||
| Version 1 (current) | 529 kB | Shaun Ewing | Aug 20, 1929 00:00 | US-1724987-A // Selective-constant-resistance network // Zobel Otto J. // American Telephone & Telegraph | ||||
| PDF File 1725691.pdf | 363 kB | Shaun Ewing | Aug 20, 1929 00:00 |
|
US-1725691-A // System of electrical distribution // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 363 kB | Shaun Ewing | Aug 20, 1929 00:00 | US-1725691-A // System of electrical distribution // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1725753.pdf | 1.19 MB | Shaun Ewing | Aug 27, 1929 00:00 |
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US-1725753-A // Office-selecting means for telephone trunk circuits // Jr. John Davidson, ; Phelps Henry E. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Aug 27, 1929 00:00 | US-1725753-A // Office-selecting means for telephone trunk circuits // Jr. John Davidson, ; Phelps Henry E. // 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 | ||||
| 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 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 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 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 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 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 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 |
