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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 666457.pdf | 1.07 MB | Shaun Ewing | Jan 22, 1901 00:00 |
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US-666457-A // Privacy-device apparatus for polystation telephone-lines. // John A. Barrett // American Telephone & Telegraph | |||
| Version 1 (current) | 1.07 MB | Shaun Ewing | Jan 22, 1901 00:00 | US-666457-A // Privacy-device apparatus for polystation telephone-lines. // John A. Barrett // American Telephone & Telegraph | ||||
| PDF File 930547.pdf | 1.07 MB | Shaun Ewing | Aug 10, 1909 00:00 |
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US-930547-A // Apparatus and system for measuring telephone service. // David S. Hulfish // American Telephone & Telegraph | |||
| Version 1 (current) | 1.07 MB | Shaun Ewing | Aug 10, 1909 00:00 | US-930547-A // Apparatus and system for measuring telephone service. // David S. Hulfish // American Telephone & Telegraph | ||||
| PDF File 1219110.pdf | 1.05 MB | Shaun Ewing | Mar 13, 1917 00:00 |
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US-1219110-A // Method of and means for quadruplexing cables. // Isidor Kitsee // American Telephone & Telegraph | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Mar 13, 1917 00:00 | US-1219110-A // Method of and means for quadruplexing cables. // Isidor Kitsee // American Telephone & Telegraph | ||||
| PDF File 1198213.pdf | 1.05 MB | Shaun Ewing | Sept 12, 1916 00:00 |
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US-1198213-A // Telephone-repeater. // Elwood Grissinger // American Telephone & Telegraph | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Sept 12, 1916 00:00 | US-1198213-A // Telephone-repeater. // Elwood Grissinger // American Telephone & Telegraph | ||||
| PDF File 1254475.pdf | 1.05 MB | Shaun Ewing | Jan 22, 1918 00:00 |
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US-1254475-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254475-A // Signaling-circuit. // George A. Campbell // American Telephone & Telegraph | ||||
| PDF File 491553.pdf | 1.04 MB | Shaun Ewing | Feb 14, 1893 00:00 |
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US-491553-A // Trunk-line signaling apparatus and circuit for telephone-exchanges // Edward J. Hall, Of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 1.04 MB | Shaun Ewing | Feb 14, 1893 00:00 | US-491553-A // Trunk-line signaling apparatus and circuit for telephone-exchanges // Edward J. Hall, Of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 736033.pdf | 1.03 MB | Shaun Ewing | Aug 11, 1903 00:00 |
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US-736033-A // Means for protecting telephone circuits and apparatus. // Almon B. Stetson // American Telephone & Telegraph | |||
| Version 1 (current) | 1.03 MB | Shaun Ewing | Aug 11, 1903 00:00 | US-736033-A // Means for protecting telephone circuits and apparatus. // Almon B. Stetson // American Telephone & Telegraph | ||||
| PDF File 1283687.pdf | 1.01 MB | Shaun Ewing | Nov 05, 1918 00:00 |
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US-1283687-A // Signaling system. // Leo H. Darrow // American Telephone & Telegraph | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | Nov 05, 1918 00:00 | US-1283687-A // Signaling system. // Leo H. Darrow // American Telephone & Telegraph | ||||
| PDF File 1236575.pdf | 1013 kB | Shaun Ewing | Aug 14, 1917 00:00 |
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US-1236575-A // Telegraphy. // Isidor Kitsee // American Telephone & Telegraph | |||
| Version 1 (current) | 1013 kB | Shaun Ewing | Aug 14, 1917 00:00 | US-1236575-A // Telegraphy. // Isidor Kitsee // American Telephone & Telegraph | ||||
| PDF File 1361522.pdf | 1012 kB | Shaun Ewing | Dec 07, 1920 00:00 |
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US-1361522-A // Plural modulation system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 1012 kB | Shaun Ewing | Dec 07, 1920 00:00 | US-1361522-A // Plural modulation system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1219955.pdf | 1000 kB | Shaun Ewing | Mar 20, 1917 00:00 |
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US-1219955-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph | |||
| Version 1 (current) | 1000 kB | Shaun Ewing | Mar 20, 1917 00:00 | US-1219955-A // Quadruplex telegraphy. // Isidor Kitsee // American Telephone & Telegraph | ||||
| PDF File 626132.pdf | 995 kB | Shaun Ewing | May 30, 1899 00:00 |
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US-626132-A // Selective privacy-switch for multiple-station telephone-lines // John A. Barrett, Of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 995 kB | Shaun Ewing | May 30, 1899 00:00 | US-626132-A // Selective privacy-switch for multiple-station telephone-lines // John A. Barrett, Of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 756296.pdf | 977 kB | Shaun Ewing | Apr 05, 1904 00:00 |
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US-756296-A // Selective signaling for polystation telephone-circuits. // Burdett Stryker // American Telephone & Telegraph | |||
| Version 1 (current) | 977 kB | Shaun Ewing | Apr 05, 1904 00:00 | US-756296-A // Selective signaling for polystation telephone-circuits. // Burdett Stryker // American Telephone & Telegraph | ||||
| PDF File 1362596.pdf | 975 kB | Shaun Ewing | Dec 21, 1920 00:00 |
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US-1362596-A // Semimechanical telephone system // Blauvelt William G. // American Telephone & Telegraph | |||
| Version 1 (current) | 975 kB | Shaun Ewing | Dec 21, 1920 00:00 | US-1362596-A // Semimechanical telephone system // Blauvelt William G. // American Telephone & Telegraph | ||||
| PDF File 893414.pdf | 959 kB | Shaun Ewing | Jul 14, 1908 00:00 |
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US-893414-A // Telephone switching and signaling apparatus. // James G. Wray ; Herbert T. Gardner ; William G. Kinton // American Telephone & Telegraph | |||
| Version 1 (current) | 959 kB | Shaun Ewing | Jul 14, 1908 00:00 | US-893414-A // Telephone switching and signaling apparatus. // James G. Wray ; Herbert T. Gardner ; William G. Kinton // American Telephone & Telegraph | ||||
| PDF File 1104956.pdf | 952 kB | Shaun Ewing | Jul 28, 1914 00:00 |
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US-1104956-A // Telephone-operator's equipment. // William G. Blauvelt ; Edward C. Molina // American Telephone & Telegraph | |||
| Version 1 (current) | 952 kB | Shaun Ewing | Jul 28, 1914 00:00 | US-1104956-A // Telephone-operator's equipment. // William G. Blauvelt ; Edward C. Molina // American Telephone & Telegraph | ||||
| PDF File 1205618.pdf | 951 kB | Shaun Ewing | Nov 21, 1916 00:00 |
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US-1205618-A // Speech-transmitting mechanism. // Elwood Grissinger // American Telephone & Telegraph | |||
| Version 1 (current) | 951 kB | Shaun Ewing | Nov 21, 1916 00:00 | US-1205618-A // Speech-transmitting mechanism. // Elwood Grissinger // American Telephone & Telegraph | ||||
| PDF File 1254146.pdf | 935 kB | Shaun Ewing | Jan 22, 1918 00:00 |
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US-1254146-A // Signaling-circuit. // William H. Martin // American Telephone & Telegraph | |||
| Version 1 (current) | 935 kB | Shaun Ewing | Jan 22, 1918 00:00 | US-1254146-A // Signaling-circuit. // William H. Martin // American Telephone & Telegraph | ||||
| PDF File 833817.pdf | 927 kB | Shaun Ewing | Oct 23, 1906 00:00 |
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US-833817-A // Telephone switching and signaling apparatus. // James G. Wray ; Herbert T. Gardner ; William G. Kinton // American Telephone & Telegraph | |||
| Version 1 (current) | 927 kB | Shaun Ewing | Oct 23, 1906 00:00 | US-833817-A // Telephone switching and signaling apparatus. // James G. Wray ; Herbert T. Gardner ; William G. Kinton // American Telephone & Telegraph | ||||
| PDF File 1227114.pdf | 920 kB | Shaun Ewing | May 22, 1917 00:00 |
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US-1227114-A // Electrical receiving, translating, or repeating circuit. // George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 920 kB | Shaun Ewing | May 22, 1917 00:00 | US-1227114-A // Electrical receiving, translating, or repeating circuit. // George A. Campbell // American Telephone & Telegraph |
