Unable to load page tree. It seems that you do not have permission to view the root page.
Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1361488.pdf | 851 kB | Shaun Ewing | Dec 07, 1920 00:00 |
|
US-1361488-A // Plural modulation system // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 851 kB | Shaun Ewing | Dec 07, 1920 00:00 | US-1361488-A // Plural modulation system // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 1361522.pdf | 1012 kB | Shaun Ewing | Dec 07, 1920 00:00 |
|
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 1361928.pdf | 1.48 MB | Shaun Ewing | Dec 14, 1920 00:00 |
|
US-1361928-A // Testing and adjusting apparatus for cord-circuits // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.48 MB | Shaun Ewing | Dec 14, 1920 00:00 | US-1361928-A // Testing and adjusting apparatus for cord-circuits // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1361929.pdf | 768 kB | Shaun Ewing | Dec 14, 1920 00:00 |
|
US-1361929-A // Monitoring-circuit for telephone-repeaters // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 768 kB | Shaun Ewing | Dec 14, 1920 00:00 | US-1361929-A // Monitoring-circuit for telephone-repeaters // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1362596.pdf | 975 kB | Shaun Ewing | Dec 21, 1920 00:00 |
|
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 1362612.pdf | 430 kB | Shaun Ewing | Dec 21, 1920 00:00 |
|
US-1362612-A // Wireless receiving system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 430 kB | Shaun Ewing | Dec 21, 1920 00:00 | US-1362612-A // Wireless receiving system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1363219.pdf | 1.47 MB | Shaun Ewing | Dec 28, 1920 00:00 |
|
US-1363219-A // Trunking system // Bascom Henry M. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.47 MB | Shaun Ewing | Dec 28, 1920 00:00 | US-1363219-A // Trunking system // Bascom Henry M. // American Telephone & Telegraph | ||||
| PDF File 1363220.pdf | 377 kB | Shaun Ewing | Dec 28, 1920 00:00 |
|
US-1363220-A // Signaling device // Bascom Henry M. // American Telephone & Telegraph | |||
| Version 1 (current) | 377 kB | Shaun Ewing | Dec 28, 1920 00:00 | US-1363220-A // Signaling device // Bascom Henry M. // American Telephone & Telegraph | ||||
| PDF File 350715.pdf | 600 kB | Shaun Ewing | Oct 12, 1886 00:00 |
|
US-350715-A // Telephone-circuit. // John A. Baekett, Of // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 600 kB | Shaun Ewing | Oct 12, 1886 00:00 | US-350715-A // Telephone-circuit. // John A. Baekett, Of // American Telephone & Telegraph, New York NY | ||||
| PDF File 371557.pdf | 260 kB | Shaun Ewing | Oct 18, 1887 00:00 |
|
US-371557-A // Means for preventing induction on electrical conductors // Stephen C. Drew, Of Massachusetts // American Telephone & Telegraph, Maine | |||
| Version 1 (current) | 260 kB | Shaun Ewing | Oct 18, 1887 00:00 | US-371557-A // Means for preventing induction on electrical conductors // Stephen C. Drew, Of Massachusetts // American Telephone & Telegraph, Maine | ||||
| PDF File 397331.pdf | 462 kB | Shaun Ewing | Feb 05, 1889 00:00 |
|
US-397331-A // Telephone circuit and apparatus // John A. Barrett, Of New York // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 462 kB | Shaun Ewing | Feb 05, 1889 00:00 | US-397331-A // Telephone circuit and apparatus // John A. Barrett, Of New York // American Telephone & Telegraph, New York NY | ||||
| PDF File 405677.pdf | 754 kB | Shaun Ewing | Jun 18, 1889 00:00 |
|
US-405677-A // Telephone Combination-circuit. // Frank A. Pickernell, of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 754 kB | Shaun Ewing | Jun 18, 1889 00:00 | US-405677-A // Telephone Combination-circuit. // Frank A. Pickernell, of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 453863.pdf | 650 kB | Shaun Ewing | Jun 09, 1891 00:00 |
|
US-453863-A // Distributing-frame for electric conductors // Angus S. Iiibbard, Of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 650 kB | Shaun Ewing | Jun 09, 1891 00:00 | US-453863-A // Distributing-frame for electric conductors // Angus S. Iiibbard, Of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 469995.pdf | 548 kB | Shaun Ewing | Mar 01, 1892 00:00 |
|
US-469995-A // Electro-magnetic annunciator // Francis W. Dunbar, Of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 548 kB | Shaun Ewing | Mar 01, 1892 00:00 | US-469995-A // Electro-magnetic annunciator // Francis W. Dunbar, Of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 476618.pdf | 471 kB | Shaun Ewing | Jun 07, 1892 00:00 |
|
US-476618-A // Apparatus and system for compound telegraphy and telephony // Francis W. Dtjnbar, Of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 471 kB | Shaun Ewing | Jun 07, 1892 00:00 | US-476618-A // Apparatus and system for compound telegraphy and telephony // Francis W. Dtjnbar, Of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 481120.pdf | 443 kB | Shaun Ewing | Aug 16, 1892 00:00 |
|
US-481120-A // Electric annunciator // Frank A. Pickernell, Of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 443 kB | Shaun Ewing | Aug 16, 1892 00:00 | US-481120-A // Electric annunciator // Frank A. Pickernell, Of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 482174.pdf | 547 kB | Shaun Ewing | Sept 06, 1892 00:00 |
|
US-482174-A // Telephone-exchange apparatus // Angus S. Hibbard, Of N. Y. // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 547 kB | Shaun Ewing | Sept 06, 1892 00:00 | US-482174-A // Telephone-exchange apparatus // Angus S. Hibbard, Of N. Y. // American Telephone & Telegraph, New York NY | ||||
| PDF File 491553.pdf | 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 | |||
| 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 492471.pdf | 593 kB | Shaun Ewing | Feb 28, 1893 00:00 |
|
US-492471-A // System of combined telephony and telegraphy // Frank A. Pickernell, of New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 593 kB | Shaun Ewing | Feb 28, 1893 00:00 | US-492471-A // System of combined telephony and telegraphy // Frank A. Pickernell, of New Jersey // American Telephone & Telegraph, New York NY | ||||
| PDF File 492482.pdf | 735 kB | Shaun Ewing | Feb 28, 1893 00:00 |
|
US-492482-A // Signaling apparatus and circuit // Edward J. Hall, Of And Prank A. Pickernell Of Newark New Jersey // American Telephone & Telegraph, New York NY | |||
| Version 1 (current) | 735 kB | Shaun Ewing | Feb 28, 1893 00:00 | US-492482-A // Signaling apparatus and circuit // Edward J. Hall, Of And Prank A. Pickernell Of Newark New Jersey // American Telephone & Telegraph, New York NY |
