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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 632296.pdf | 1.18 MB | Shaun Ewing | Sept 05, 1899 00:00 |
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US-632296-A // Telephone switchboard and circuits. // Thomas C. Wales, Jr. ; Karl W. Waterson // American Bell Telephone Co | |||
| Version 1 (current) | 1.18 MB | Shaun Ewing | Sept 05, 1899 00:00 | US-632296-A // Telephone switchboard and circuits. // Thomas C. Wales, Jr. ; Karl W. Waterson // American Bell Telephone Co | ||||
| PDF File 589431.pdf | 1.14 MB | Shaun Ewing | Sept 07, 1897 00:00 |
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US-589431-A // Telephonic Measured-service System. // Hammond V. Hayes, Of And Thomas C. Wales Jr. Of Newton Massachusetts // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1.14 MB | Shaun Ewing | Sept 07, 1897 00:00 | US-589431-A // Telephonic Measured-service System. // Hammond V. Hayes, Of And Thomas C. Wales Jr. Of Newton Massachusetts // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 636872.pdf | 1.11 MB | Shaun Ewing | Nov 14, 1899 00:00 |
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US-636872-A // Telephone trunk-line signaling. // Thomas C. Wales, Jr. // American Bell Telephone Co | |||
| Version 1 (current) | 1.11 MB | Shaun Ewing | Nov 14, 1899 00:00 | US-636872-A // Telephone trunk-line signaling. // Thomas C. Wales, Jr. // American Bell Telephone Co | ||||
| PDF File 641737.pdf | 1.08 MB | Shaun Ewing | Jan 23, 1900 00:00 |
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US-641737-A // Registering apparatus and circuit for telephonic measured service. // George K. Thompson // American Bell Telephone Co | |||
| Version 1 (current) | 1.08 MB | Shaun Ewing | Jan 23, 1900 00:00 | US-641737-A // Registering apparatus and circuit for telephonic measured service. // George K. Thompson // American Bell Telephone Co | ||||
| PDF File 669901.pdf | 1.08 MB | Shaun Ewing | Mar 12, 1901 00:00 |
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US-669901-A // System of central current-supply for private-line telephone-circuits. // Malcolm C. Rorty // American Bell Telephone Co | |||
| Version 1 (current) | 1.08 MB | Shaun Ewing | Mar 12, 1901 00:00 | US-669901-A // System of central current-supply for private-line telephone-circuits. // Malcolm C. Rorty // American Bell Telephone Co | ||||
| PDF File 685401.pdf | 1.08 MB | Shaun Ewing | Oct 29, 1901 00:00 |
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US-685401-A // Universal call-circuit and apparatus for toll service. // Angus S. Hibbard // American Bell Telephone Co | |||
| Version 1 (current) | 1.08 MB | Shaun Ewing | Oct 29, 1901 00:00 | US-685401-A // Universal call-circuit and apparatus for toll service. // Angus S. Hibbard // American Bell Telephone Co | ||||
| PDF File 507424.pdf | 1.04 MB | Shaun Ewing | Oct 24, 1893 00:00 |
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US-507424-A // Distributing-frame for Electric Wires. // William S. Ford, Op And Bertram A. Lenfest Of Wake-Field // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1.04 MB | Shaun Ewing | Oct 24, 1893 00:00 | US-507424-A // Distributing-frame for Electric Wires. // William S. Ford, Op And Bertram A. Lenfest Of Wake-Field // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 761995.pdf | 1.04 MB | Shaun Ewing | Jun 07, 1904 00:00 |
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US-761995-A // Apparatus for reducing attenuation of electrical waves. // Michael I. Pupin // American Bell Telephone Co | |||
| Version 1 (current) | 1.04 MB | Shaun Ewing | Jun 07, 1904 00:00 | US-761995-A // Apparatus for reducing attenuation of electrical waves. // Michael I. Pupin // American Bell Telephone Co | ||||
| PDF File 627814.pdf | 1.00 MB | Shaun Ewing | Jun 27, 1899 00:00 |
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US-627814-A // Telephone-exchange switch apparatus and circuits. // Chester H. Arnold // American Bell Telephone Co | |||
| Version 1 (current) | 1.00 MB | Shaun Ewing | Jun 27, 1899 00:00 | US-627814-A // Telephone-exchange switch apparatus and circuits. // Chester H. Arnold // American Bell Telephone Co | ||||
| PDF File 447485.pdf | 1023 kB | Shaun Ewing | Mar 03, 1891 00:00 |
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US-447485-A // Telephone-exchange Apparatus. // Franklin G. Beach, Of Illinois // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1023 kB | Shaun Ewing | Mar 03, 1891 00:00 | US-447485-A // Telephone-exchange Apparatus. // Franklin G. Beach, Of Illinois // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 647588.pdf | 1017 kB | Shaun Ewing | Apr 17, 1900 00:00 |
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US-647588-A // Combined telephone and electrothermostatic fire-alarm system. // George K. Thompson // American Bell Telepone Company | |||
| Version 1 (current) | 1017 kB | Shaun Ewing | Apr 17, 1900 00:00 | US-647588-A // Combined telephone and electrothermostatic fire-alarm system. // George K. Thompson // American Bell Telepone Company | ||||
| PDF File 586888.pdf | 1005 kB | Shaun Ewing | Jul 20, 1897 00:00 |
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US-586888-A // Telephone Signaling Relay and Circuit. // Arthur S. Williams, Of Massachusetts // The American Bell Telephone Company, Op Boston, Massachusetts. | |||
| Version 1 (current) | 1005 kB | Shaun Ewing | Jul 20, 1897 00:00 | US-586888-A // Telephone Signaling Relay and Circuit. // Arthur S. Williams, Of Massachusetts // The American Bell Telephone Company, Op Boston, Massachusetts. | ||||
| PDF File 252986.pdf | 1004 kB | Shaun Ewing | Jan 31, 1882 00:00 |
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US-252986-A // Telephone-exchange Apparatus. // George Lee Anders, Of County Of Middlesex England // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1004 kB | Shaun Ewing | Jan 31, 1882 00:00 | US-252986-A // Telephone-exchange Apparatus. // George Lee Anders, Of County Of Middlesex England // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 586685.pdf | 992 kB | Shaun Ewing | Jul 20, 1897 00:00 |
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US-586685-A // Telephone-switchboard. // Hammond V. Hayes, Of Massachusetts // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 992 kB | Shaun Ewing | Jul 20, 1897 00:00 | US-586685-A // Telephone-switchboard. // Hammond V. Hayes, Of Massachusetts // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 666444.pdf | 988 kB | Shaun Ewing | Jan 22, 1901 00:00 |
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US-666444-A // Telephone-exchange central-station switchboard apparatus. // George Knox Thompson ; Ernest Clifton Robes // American Bell Telephone Co | |||
| Version 1 (current) | 988 kB | Shaun Ewing | Jan 22, 1901 00:00 | US-666444-A // Telephone-exchange central-station switchboard apparatus. // George Knox Thompson ; Ernest Clifton Robes // American Bell Telephone Co | ||||
| PDF File 666706.pdf | 984 kB | Shaun Ewing | Jan 29, 1901 00:00 |
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US-666706-A // Selective signaling and registering apparatus circuit. // Herbert E. Shreeve // American Bell Telephone Co | |||
| Version 1 (current) | 984 kB | Shaun Ewing | Jan 29, 1901 00:00 | US-666706-A // Selective signaling and registering apparatus circuit. // Herbert E. Shreeve // American Bell Telephone Co | ||||
| PDF File 251807.pdf | 974 kB | Shaun Ewing | Jan 03, 1882 00:00 |
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US-251807-A // Signaling and Circuit-connecting Apparatus. // Thomas A. Watson, Op // The American Bell Telephone Company, Op Boston, Massachusetts. | |||
| Version 1 (current) | 974 kB | Shaun Ewing | Jan 03, 1882 00:00 | US-251807-A // Signaling and Circuit-connecting Apparatus. // Thomas A. Watson, Op // The American Bell Telephone Company, Op Boston, Massachusetts. | ||||
| PDF File 641743.pdf | 972 kB | Shaun Ewing | Jan 23, 1900 00:00 |
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US-641743-A // Telephone-switchboard apparatus and appliance. // Thomas C. Wales, Jr. // American Bell Telephone Co | |||
| Version 1 (current) | 972 kB | Shaun Ewing | Jan 23, 1900 00:00 | US-641743-A // Telephone-switchboard apparatus and appliance. // Thomas C. Wales, Jr. // American Bell Telephone Co | ||||
| PDF File 551056.pdf | 969 kB | Shaun Ewing | Dec 10, 1895 00:00 |
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US-551056-A // Multiple-switchboard System. // Theodore Spencer, Of And Thomas C. Wales Jr. Of Boston // The American Bell Telephone Company, Of Boston-, Massachusetts. | |||
| Version 1 (current) | 969 kB | Shaun Ewing | Dec 10, 1895 00:00 | US-551056-A // Multiple-switchboard System. // Theodore Spencer, Of And Thomas C. Wales Jr. Of Boston // The American Bell Telephone Company, Of Boston-, Massachusetts. | ||||
| PDF File 544545.pdf | 961 kB | Shaun Ewing | Aug 13, 1895 00:00 |
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US-544545-A // Signal Apparatus for Telephone-exchanges. // Joseph J. Oconnell, Of Illinois Assignor By Mesne // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 961 kB | Shaun Ewing | Aug 13, 1895 00:00 | US-544545-A // Signal Apparatus for Telephone-exchanges. // Joseph J. Oconnell, Of Illinois Assignor By Mesne // The American Bell Telephone Company, Of Boston, Massachusetts. |
