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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 709740.pdf | 3.93 MB | Shaun Ewing | Sept 23, 1902 00:00 |
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US-709740-A // Automatic telephone-exchange system and apparatus. // Albert M. Bullard ; Malcolm C. Rorty // American Bell Telephone Co | |||
| Version 1 (current) | 3.93 MB | Shaun Ewing | Sept 23, 1902 00:00 | US-709740-A // Automatic telephone-exchange system and apparatus. // Albert M. Bullard ; Malcolm C. Rorty // American Bell Telephone Co | ||||
| PDF File 743564.pdf | 2.19 MB | Shaun Ewing | Nov 10, 1903 00:00 |
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US-743564-A // Automatic telephone-exchange. // Malcolm C. Rorty ; Albert M. Bullard // American Bell Telephone Co | |||
| Version 1 (current) | 2.19 MB | Shaun Ewing | Nov 10, 1903 00:00 | US-743564-A // Automatic telephone-exchange. // Malcolm C. Rorty ; Albert M. Bullard // American Bell Telephone Co | ||||
| PDF File 709739.pdf | 1.98 MB | Shaun Ewing | Sept 23, 1902 00:00 |
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US-709739-A // Automatic telephone-exchange. // Albert M. Bullard // American Bell Telephone Co | |||
| Version 1 (current) | 1.98 MB | Shaun Ewing | Sept 23, 1902 00:00 | US-709739-A // Automatic telephone-exchange. // Albert M. Bullard // American Bell Telephone Co | ||||
| PDF File 235199.pdf | 1.90 MB | Shaun Ewing | Dec 07, 1880 00:00 |
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US-235199-A // Apparatus for Signaling and Communicating, Called "photophone." // Alexander G. Bell, Of District Op Columbia // American Bell Telephone Company, Of Boston, Mass. | |||
| Version 1 (current) | 1.90 MB | Shaun Ewing | Dec 07, 1880 00:00 | US-235199-A // Apparatus for Signaling and Communicating, Called "photophone." // Alexander G. Bell, Of District Op Columbia // American Bell Telephone Company, Of Boston, Mass. | ||||
| PDF File 536787.pdf | 1.89 MB | Shaun Ewing | Apr 02, 1895 00:00 |
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US-536787-A // Telephone-exchange System and Apparatus. // Hammond V. Hayes And Theodore Spenoee, Of // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1.89 MB | Shaun Ewing | Apr 02, 1895 00:00 | US-536787-A // Telephone-exchange System and Apparatus. // Hammond V. Hayes And Theodore Spenoee, Of // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 510863.pdf | 1.60 MB | Shaun Ewing | Dec 12, 1893 00:00 |
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US-510863-A // Telephone-exchange System. // William W. Jacques. Of Newton", // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1.60 MB | Shaun Ewing | Dec 12, 1893 00:00 | US-510863-A // Telephone-exchange System. // William W. Jacques. Of Newton", // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 569401.pdf | 1.57 MB | Shaun Ewing | Oct 13, 1896 00:00 |
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US-569401-A // Multiple-station Telephone-circuit. // John A. Barrett, Of Vermont // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1.57 MB | Shaun Ewing | Oct 13, 1896 00:00 | US-569401-A // Multiple-station Telephone-circuit. // John A. Barrett, Of Vermont // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 457477.pdf | 1.49 MB | Shaun Ewing | Aug 11, 1891 00:00 |
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US-457477-A // Automatic Telephone System. // Hammond Y. Hayes, Of And Henry D. Sears Of Lynn // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1.49 MB | Shaun Ewing | Aug 11, 1891 00:00 | US-457477-A // Automatic Telephone System. // Hammond Y. Hayes, Of And Henry D. Sears Of Lynn // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 657315.pdf | 1.44 MB | Shaun Ewing | Sept 04, 1900 00:00 |
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US-657315-A // Telephone switching apparatus. // David S. Hulfish // American Bell Telephone Co | |||
| Version 1 (current) | 1.44 MB | Shaun Ewing | Sept 04, 1900 00:00 | US-657315-A // Telephone switching apparatus. // David S. Hulfish // American Bell Telephone Co | ||||
| PDF File 412580.pdf | 1.41 MB | Shaun Ewing | Oct 08, 1889 00:00 |
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US-412580-A // Telephone-station Apparatus. // Bruno Abdank-Abakanowicz, Of // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1.41 MB | Shaun Ewing | Oct 08, 1889 00:00 | US-412580-A // Telephone-station Apparatus. // Bruno Abdank-Abakanowicz, Of // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 571351.pdf | 1.39 MB | Shaun Ewing | Nov 17, 1896 00:00 |
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US-571351-A // Electromagnetic Sig Nal-receiving Instrument. // Stephen I). Field, Of Massachusetts // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1.39 MB | Shaun Ewing | Nov 17, 1896 00:00 | US-571351-A // Electromagnetic Sig Nal-receiving Instrument. // Stephen I). Field, Of Massachusetts // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 507565.pdf | 1.33 MB | Shaun Ewing | Oct 31, 1893 00:00 |
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US-507565-A // Test and Signal Circuit and Appliance. // Theodore Spencer, Of // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1.33 MB | Shaun Ewing | Oct 31, 1893 00:00 | US-507565-A // Test and Signal Circuit and Appliance. // Theodore Spencer, Of // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 336562.pdf | 1.33 MB | Shaun Ewing | Feb 23, 1886 00:00 |
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US-336562-A // Electric Signaling Apparatus. // Ezea T. Gilliland, Op Massachusetts // The American Bell Telephone Company; Of Same Place. | |||
| Version 1 (current) | 1.33 MB | Shaun Ewing | Feb 23, 1886 00:00 | US-336562-A // Electric Signaling Apparatus. // Ezea T. Gilliland, Op Massachusetts // The American Bell Telephone Company; Of Same Place. | ||||
| PDF File 306238.pdf | 1.31 MB | Shaun Ewing | Oct 07, 1884 00:00 |
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US-306238-A // Telephone Circuit and Apparatus. // Ezra T. Gtlliland, Of Massachusetts // The American Bell Telephone Company, Of Same Place. | |||
| Version 1 (current) | 1.31 MB | Shaun Ewing | Oct 07, 1884 00:00 | US-306238-A // Telephone Circuit and Apparatus. // Ezra T. Gtlliland, Of Massachusetts // The American Bell Telephone Company, Of Same Place. | ||||
| PDF File 544546.pdf | 1.31 MB | Shaun Ewing | Aug 13, 1895 00:00 |
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US-544546-A // Apparatus for Telephone-exchanges. // Joseph J. Oconnell, Of Illinois Assignor By Mesne // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1.31 MB | Shaun Ewing | Aug 13, 1895 00:00 | US-544546-A // Apparatus for Telephone-exchanges. // Joseph J. Oconnell, Of Illinois Assignor By Mesne // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 419645.pdf | 1.29 MB | Shaun Ewing | Jan 21, 1890 00:00 |
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US-419645-A // Telephonic Circuit and Apparatus. // John N. Culbertson, Of New York // The American Bell Telephone Company, Of Boston, Massachusetts. | |||
| Version 1 (current) | 1.29 MB | Shaun Ewing | Jan 21, 1890 00:00 | US-419645-A // Telephonic Circuit and Apparatus. // John N. Culbertson, Of New York // The American Bell Telephone Company, Of Boston, Massachusetts. | ||||
| PDF File 528040.pdf | 1.22 MB | Shaun Ewing | Oct 23, 1894 00:00 |
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US-528040-A // Telephone Circuit and Signal. // Theodore Spencer, Of // The American Bell Telephone Company, Op Boston, Massachusetts. | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Oct 23, 1894 00:00 | US-528040-A // Telephone Circuit and Signal. // Theodore Spencer, Of // The American Bell Telephone Company, Op Boston, Massachusetts. | ||||
| PDF File 666698.pdf | 1.22 MB | Shaun Ewing | Jan 29, 1901 00:00 |
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US-666698-A // Telephone-exchange circuit and signaling apparatus. // Malcolm C. Rorty // American Bell Telephone Co | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Jan 29, 1901 00:00 | US-666698-A // Telephone-exchange circuit and signaling apparatus. // Malcolm C. Rorty // American Bell Telephone Co | ||||
| PDF File 441066.pdf | 1.19 MB | Shaun Ewing | Nov 18, 1890 00:00 |
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US-441066-A // Thermal Protector. // Hammond V. Hayes, Of Massachusetts // The American Bell Telephone Company, Of Massachusetts. | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Nov 18, 1890 00:00 | US-441066-A // Thermal Protector. // Hammond V. Hayes, Of Massachusetts // The American Bell Telephone Company, Of Massachusetts. | ||||
| PDF File 644647.pdf | 1.18 MB | Shaun Ewing | Mar 06, 1900 00:00 |
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US-644647-A // Selective signal for telephone-circuits. // George K. Thompson ; Ernest C. Robes // American Bell Telephone Co | |||
| Version 1 (current) | 1.18 MB | Shaun Ewing | Mar 06, 1900 00:00 | US-644647-A // Selective signal for telephone-circuits. // George K. Thompson ; Ernest C. Robes // American Bell Telephone Co |
