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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 736002.pdf | 914 kB | Shaun Ewing | Aug 11, 1903 00:00 |
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US-736002-A // Busy-test apparatus for telephone-switchboards. // Joseph J. O'Connell // American Telephone & Telegraph | |||
| Version 1 (current) | 914 kB | Shaun Ewing | Aug 11, 1903 00:00 | US-736002-A // Busy-test apparatus for telephone-switchboards. // Joseph J. O'Connell // American Telephone & Telegraph | ||||
| PDF File 733225.pdf | 203 kB | Shaun Ewing | Jul 07, 1903 00:00 |
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US-733225-A // Electric bell-ringer. // Tiodolf Lidberg // Swedish American Telephone Company | |||
| Version 1 (current) | 203 kB | Shaun Ewing | Jul 07, 1903 00:00 | US-733225-A // Electric bell-ringer. // Tiodolf Lidberg // Swedish American Telephone Company | ||||
| PDF File 732795.pdf | 627 kB | Shaun Ewing | Jul 07, 1903 00:00 |
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US-732795-A // Substation telephone-circuit. // Almon B. Stetson // American Telephone & Telegraph | |||
| Version 1 (current) | 627 kB | Shaun Ewing | Jul 07, 1903 00:00 | US-732795-A // Substation telephone-circuit. // Almon B. Stetson // American Telephone & Telegraph | ||||
| PDF File 729709.pdf | 831 kB | Shaun Ewing | Jun 02, 1903 00:00 |
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US-729709-A // Loaded electric circuit. // Howard S. Warren ; George A. Campbell // American Telephone & Telegraph | |||
| Version 1 (current) | 831 kB | Shaun Ewing | Jun 02, 1903 00:00 | US-729709-A // Loaded electric circuit. // Howard S. Warren ; George A. Campbell // American Telephone & Telegraph | ||||
| PDF File 727829.pdf | 318 kB | Shaun Ewing | May 12, 1903 00:00 |
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US-727829-A // Cable-terminal. // Joseph J. O'Connell // American Telephone & Telegraph | |||
| Version 1 (current) | 318 kB | Shaun Ewing | May 12, 1903 00:00 | US-727829-A // Cable-terminal. // Joseph J. O'Connell // American Telephone & Telegraph | ||||
| PDF File 719736.pdf | 1.33 MB | Shaun Ewing | Feb 03, 1903 00:00 |
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US-719736-A // Service-meter system and apparatus for telephone-exchanges. // Albert M. Bullard ; Louis A. Falk // American Telephone & Telegraph | |||
| Version 1 (current) | 1.33 MB | Shaun Ewing | Feb 03, 1903 00:00 | US-719736-A // Service-meter system and apparatus for telephone-exchanges. // Albert M. Bullard ; Louis A. Falk // American Telephone & Telegraph | ||||
| PDF File 716779.pdf | 558 kB | Shaun Ewing | Dec 23, 1902 00:00 |
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US-716779-A // Telephone-transmitter circuit. // Almon B. Stetson // American Telephone & Telegraph | |||
| Version 1 (current) | 558 kB | Shaun Ewing | Dec 23, 1902 00:00 | US-716779-A // Telephone-transmitter circuit. // Almon B. Stetson // American Telephone & Telegraph | ||||
| PDF File 712801.pdf | 853 kB | Shaun Ewing | Nov 04, 1902 00:00 |
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US-712801-A // Switchboard and supervisory signal circuit. // David S. Hulfish // American Telephone & Telegraph | |||
| Version 1 (current) | 853 kB | Shaun Ewing | Nov 04, 1902 00:00 | US-712801-A // Switchboard and supervisory signal circuit. // David S. Hulfish // American Telephone & Telegraph | ||||
| PDF File 712766.pdf | 649 kB | Shaun Ewing | Nov 04, 1902 00:00 |
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US-712766-A // Composite transmission over loaded electric circuits. // Edwin H. Colpitts // American Telephone & Telegraph | |||
| Version 1 (current) | 649 kB | Shaun Ewing | Nov 04, 1902 00:00 | US-712766-A // Composite transmission over loaded electric circuits. // Edwin H. Colpitts // American Telephone & Telegraph | ||||
| PDF File 709437.pdf | 534 kB | Shaun Ewing | Sept 16, 1902 00:00 |
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US-709437-A // Apparatus for composite systems of simultaneous telegraphy and telephony. // John M. Fell // American Telephone & Telegraph | |||
| Version 1 (current) | 534 kB | Shaun Ewing | Sept 16, 1902 00:00 | US-709437-A // Apparatus for composite systems of simultaneous telegraphy and telephony. // John M. Fell // American Telephone & Telegraph | ||||
| PDF File 708539.pdf | 611 kB | Shaun Ewing | Sept 09, 1902 00:00 |
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US-708539-A // Vibratory-current relay. // John M. Fell // American Telephone & Telegraph | |||
| Version 1 (current) | 611 kB | Shaun Ewing | Sept 09, 1902 00:00 | US-708539-A // Vibratory-current relay. // John M. Fell // American Telephone & Telegraph | ||||
| PDF File 705936.pdf | 344 kB | Shaun Ewing | Jul 29, 1902 00:00 |
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US-705936-A // Loaded electric circuit. // John C. Lee ; Edwin H. Colpitts // American Telephone & Telegraph | |||
| Version 1 (current) | 344 kB | Shaun Ewing | Jul 29, 1902 00:00 | US-705936-A // Loaded electric circuit. // John C. Lee ; Edwin H. Colpitts // American Telephone & Telegraph | ||||
| PDF File 705935.pdf | 661 kB | Shaun Ewing | Jul 29, 1902 00:00 |
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US-705935-A // Magnetic core for inductance-coils. // John C. Lee ; Edwin H. Colpitts // American Telephone & Telegraph | |||
| Version 1 (current) | 661 kB | Shaun Ewing | Jul 29, 1902 00:00 | US-705935-A // Magnetic core for inductance-coils. // John C. Lee ; Edwin H. Colpitts // American Telephone & Telegraph | ||||
| PDF File 705686.pdf | 475 kB | Shaun Ewing | Jul 29, 1902 00:00 |
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US-705686-A // Telephony. // Joseph Lyons // American Telephone & Telegraph | |||
| Version 1 (current) | 475 kB | Shaun Ewing | Jul 29, 1902 00:00 | US-705686-A // Telephony. // Joseph Lyons // American Telephone & Telegraph | ||||
| PDF File 705685.pdf | 480 kB | Shaun Ewing | Jul 29, 1902 00:00 |
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US-705685-A // Telephony. // Joseph Lyons // American Telephone & Telegraph | |||
| Version 1 (current) | 480 kB | Shaun Ewing | Jul 29, 1902 00:00 | US-705685-A // Telephony. // Joseph Lyons // American Telephone & Telegraph | ||||
| PDF File 692471.pdf | 638 kB | Shaun Ewing | Feb 04, 1902 00:00 |
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US-692471-A // Electric annunciator. // Elsworth B. Overshiner // Swedish American Telephone Company | |||
| Version 1 (current) | 638 kB | Shaun Ewing | Feb 04, 1902 00:00 | US-692471-A // Electric annunciator. // Elsworth B. Overshiner // Swedish American Telephone Company | ||||
| PDF File 681603.pdf | 812 kB | Shaun Ewing | Aug 27, 1901 00:00 |
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US-681603-A // Mechanical intercommunication between telephone-switchboards. // George M. Yorke // American Telephone & Telegraph | |||
| Version 1 (current) | 812 kB | Shaun Ewing | Aug 27, 1901 00:00 | US-681603-A // Mechanical intercommunication between telephone-switchboards. // George M. Yorke // American Telephone & Telegraph | ||||
| PDF File 668967.pdf | 744 kB | Shaun Ewing | Feb 26, 1901 00:00 |
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US-668967-A // Selective signaling apparatus. // John A. Barrett // American Telephone & Telegraph | |||
| Version 1 (current) | 744 kB | Shaun Ewing | Feb 26, 1901 00:00 | US-668967-A // Selective signaling apparatus. // John A. Barrett // American Telephone & Telegraph | ||||
| PDF File 667327.pdf | 381 kB | Shaun Ewing | Feb 05, 1901 00:00 |
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US-667327-A // Telephone-transmitter. // Tiodolf Lidberg // Swedish American Telephone Company | |||
| Version 1 (current) | 381 kB | Shaun Ewing | Feb 05, 1901 00:00 | US-667327-A // Telephone-transmitter. // Tiodolf Lidberg // Swedish American Telephone Company | ||||
| 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 |
