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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| 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 1725691.pdf | 363 kB | Shaun Ewing | Aug 20, 1929 00:00 |
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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 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 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 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 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 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 1724019.pdf | 542 kB | Shaun Ewing | Aug 13, 1929 00:00 |
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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 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 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 1723123.pdf | 531 kB | Shaun Ewing | Aug 06, 1929 00:00 |
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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 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 1722274.pdf | 326 kB | Shaun Ewing | Jul 30, 1929 00:00 |
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US-1722274-A // Telautograph system // Clark Alva B. ; Mertz Pierre // American Telephone & Telegraph | |||
| Version 1 (current) | 326 kB | Shaun Ewing | Jul 30, 1929 00:00 | US-1722274-A // Telautograph system // Clark Alva B. ; Mertz Pierre // American Telephone & Telegraph | ||||
| PDF File 1722262.pdf | 645 kB | Shaun Ewing | Jul 30, 1929 00:00 |
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US-1722262-A // Telephone-exchange system // Bascom Henry M. // American Telephone & Telegraph | |||
| Version 1 (current) | 645 kB | Shaun Ewing | Jul 30, 1929 00:00 | US-1722262-A // Telephone-exchange system // Bascom Henry M. // American Telephone & Telegraph | ||||
| PDF File 1721574.pdf | 582 kB | Shaun Ewing | Jul 23, 1929 00:00 |
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US-1721574-A // Transmission level regulation // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 582 kB | Shaun Ewing | Jul 23, 1929 00:00 | US-1721574-A // Transmission level regulation // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1721572.pdf | 317 kB | Shaun Ewing | Jul 23, 1929 00:00 |
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US-1721572-A // Carrier-current system superposed on side circuit of phantom system // O'Leary Joseph T. // American Telephone & Telegraph | |||
| Version 1 (current) | 317 kB | Shaun Ewing | Jul 23, 1929 00:00 | US-1721572-A // Carrier-current system superposed on side circuit of phantom system // O'Leary Joseph T. // American Telephone & Telegraph | ||||
| PDF File 1721567.pdf | 308 kB | Shaun Ewing | Jul 23, 1929 00:00 |
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US-1721567-A // Multiplex radio transmitting system // Martin De Loss K. // American Telephone & Telegraph | |||
| Version 1 (current) | 308 kB | Shaun Ewing | Jul 23, 1929 00:00 | US-1721567-A // Multiplex radio transmitting system // Martin De Loss K. // American Telephone & Telegraph | ||||
| PDF File 1720777.pdf | 879 kB | Shaun Ewing | Jul 16, 1929 00:00 |
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US-1720777-A // Electrical network // Zobel Otto J. // American Telephone & Telegraph | |||
| Version 1 (current) | 879 kB | Shaun Ewing | Jul 16, 1929 00:00 | US-1720777-A // Electrical network // Zobel Otto J. // American Telephone & Telegraph | ||||
| PDF File 1720770.pdf | 928 kB | Shaun Ewing | Jul 16, 1929 00:00 |
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US-1720770-A // Associated resonant circuits // Stone John Stone // American Telephone & Telegraph | |||
| Version 1 (current) | 928 kB | Shaun Ewing | Jul 16, 1929 00:00 | US-1720770-A // Associated resonant circuits // Stone John Stone // American Telephone & Telegraph | ||||
| PDF File 1720746.pdf | 213 kB | Shaun Ewing | Jul 16, 1929 00:00 |
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US-1720746-A // Support for wires // Povlsen Paul K. ; John Everett St. // American Telephone & Telegraph | |||
| Version 1 (current) | 213 kB | Shaun Ewing | Jul 16, 1929 00:00 | US-1720746-A // Support for wires // Povlsen Paul K. ; John Everett St. // American Telephone & Telegraph |
