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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1573891.pdf | 451 kB | Shaun Ewing | Feb 23, 1926 00:00 |
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US-1573891-A // Gain-controlling circuits // Wright Sumner B. ; Schott John T. // American Telephone & Telegraph | |||
| Version 1 (current) | 451 kB | Shaun Ewing | Feb 23, 1926 00:00 | US-1573891-A // Gain-controlling circuits // Wright Sumner B. ; Schott John T. // American Telephone & Telegraph | ||||
| PDF File 1749048.pdf | 451 kB | Shaun Ewing | Mar 04, 1930 00:00 |
|
US-1749048-A // Carrier-telegraph alarm system // Thorp Vaughn P. ; Rea Wilton T. // American Telephone & Telegraph | |||
| Version 1 (current) | 451 kB | Shaun Ewing | Mar 04, 1930 00:00 | US-1749048-A // Carrier-telegraph alarm system // Thorp Vaughn P. ; Rea Wilton T. // American Telephone & Telegraph | ||||
| PDF File 1664652.pdf | 450 kB | Shaun Ewing | Apr 03, 1928 00:00 |
|
US-1664652-A // Picture-transmitting system // Watson Edward F. ; Weaver Allan // American Telephone & Telegraph | |||
| Version 1 (current) | 450 kB | Shaun Ewing | Apr 03, 1928 00:00 | US-1664652-A // Picture-transmitting system // Watson Edward F. ; Weaver Allan // American Telephone & Telegraph | ||||
| PDF File 1372042.pdf | 450 kB | Shaun Ewing | Mar 22, 1921 00:00 |
|
US-1372042-A // Desk operator's circuits // Rhodes William A. // American Telephone & Telegraph | |||
| Version 1 (current) | 450 kB | Shaun Ewing | Mar 22, 1921 00:00 | US-1372042-A // Desk operator's circuits // Rhodes William A. // American Telephone & Telegraph | ||||
| PDF File 1389596.pdf | 450 kB | Shaun Ewing | Sept 06, 1921 00:00 |
|
US-1389596-A // Desk operator's circuits // Rhodes William A. // American Telephone & Telegraph | |||
| Version 1 (current) | 450 kB | Shaun Ewing | Sept 06, 1921 00:00 | US-1389596-A // Desk operator's circuits // Rhodes William A. // American Telephone & Telegraph | ||||
| PDF File 1772550.pdf | 449 kB | Shaun Ewing | Aug 12, 1930 00:00 |
|
US-1772550-A // Echo suppressor // Mitchell Doren ; Silent Harold C. // American Telephone & Telegraph | |||
| Version 1 (current) | 449 kB | Shaun Ewing | Aug 12, 1930 00:00 | US-1772550-A // Echo suppressor // Mitchell Doren ; Silent Harold C. // American Telephone & Telegraph | ||||
| PDF File 1457338.pdf | 449 kB | Shaun Ewing | Jun 05, 1923 00:00 |
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US-1457338-A // Selective connection of trunk lines // Barrows Leon D. ; Darrow Leo H. // American Telephone & Telegraph | |||
| Version 1 (current) | 449 kB | Shaun Ewing | Jun 05, 1923 00:00 | US-1457338-A // Selective connection of trunk lines // Barrows Leon D. ; Darrow Leo H. // American Telephone & Telegraph | ||||
| PDF File 1496014.pdf | 449 kB | Shaun Ewing | Jun 03, 1924 00:00 |
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US-1496014-A // Multichannel circuits // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 449 kB | Shaun Ewing | Jun 03, 1924 00:00 | US-1496014-A // Multichannel circuits // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 1723220.pdf | 448 kB | Shaun Ewing | Aug 06, 1929 00:00 |
|
US-1723220-A // Carrier-telegraph alarm system // Thorp Vaughn P. // American Telephone & Telegraph | |||
| Version 1 (current) | 448 kB | Shaun Ewing | Aug 06, 1929 00:00 | US-1723220-A // Carrier-telegraph alarm system // Thorp Vaughn P. // American Telephone & Telegraph | ||||
| PDF File 1392152.pdf | 447 kB | Shaun Ewing | Sept 27, 1921 00:00 |
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US-1392152-A // Multiple-station transmission-circuits // Harden William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Sept 27, 1921 00:00 | US-1392152-A // Multiple-station transmission-circuits // Harden William H. // American Telephone & Telegraph | ||||
| PDF File 1687495.pdf | 447 kB | Shaun Ewing | Oct 16, 1928 00:00 |
|
US-1687495-A // Insulator // Gordon Chester S. ; Lowe James T. // American Telephone & Telegraph | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Oct 16, 1928 00:00 | US-1687495-A // Insulator // Gordon Chester S. ; Lowe James T. // American Telephone & Telegraph | ||||
| PDF File 1756102.pdf | 447 kB | Shaun Ewing | Apr 29, 1930 00:00 |
|
US-1756102-A // Telephone system // Rosekrans Wilfred M. // American Telephone & Telegraph | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Apr 29, 1930 00:00 | US-1756102-A // Telephone system // Rosekrans Wilfred M. // American Telephone & Telegraph | ||||
| PDF File 1616507.pdf | 447 kB | Shaun Ewing | Feb 08, 1927 00:00 |
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US-1616507-A // Means for measuring the margin of operation of telegraph circuits // Pierce Ralph E. // American Telephone & Telegraph | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Feb 08, 1927 00:00 | US-1616507-A // Means for measuring the margin of operation of telegraph circuits // Pierce Ralph E. // American Telephone & Telegraph | ||||
| PDF File 1693662.pdf | 447 kB | Shaun Ewing | Dec 04, 1928 00:00 |
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US-1693662-A // Radio signaling system // Ohl Russell S. // American Telephone & Telegraph | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Dec 04, 1928 00:00 | US-1693662-A // Radio signaling system // Ohl Russell S. // American Telephone & Telegraph | ||||
| PDF File 1724925.pdf | 447 kB | Shaun Ewing | Aug 20, 1929 00:00 |
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US-1724925-A // Carrier-signaling system // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Aug 20, 1929 00:00 | US-1724925-A // Carrier-signaling system // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1461492.pdf | 447 kB | Shaun Ewing | Jul 10, 1923 00:00 |
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US-1461492-A // Electrical testing instrument // Moody John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Jul 10, 1923 00:00 | US-1461492-A // Electrical testing instrument // Moody John F. // American Telephone & Telegraph | ||||
| PDF File 1535104.pdf | 446 kB | Shaun Ewing | Apr 28, 1925 00:00 |
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US-1535104-A // Means for preventing electrical interference // Cory Samuel I. // American Telephone & Telegraph | |||
| Version 1 (current) | 446 kB | Shaun Ewing | Apr 28, 1925 00:00 | US-1535104-A // Means for preventing electrical interference // Cory Samuel I. // American Telephone & Telegraph | ||||
| PDF File 1593640.pdf | 445 kB | Shaun Ewing | Jul 27, 1926 00:00 |
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US-1593640-A // Neutralization of inductive interference // Trueblood Howard M. // American Telephone & Telegraph | |||
| Version 1 (current) | 445 kB | Shaun Ewing | Jul 27, 1926 00:00 | US-1593640-A // Neutralization of inductive interference // Trueblood Howard M. // American Telephone & Telegraph | ||||
| PDF File 1661167.pdf | 445 kB | Shaun Ewing | Mar 06, 1928 00:00 |
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US-1661167-A // System of picture transmission // Clark Alva B. ; Gannett Danforth K. // American Telephone & Telegraph | |||
| Version 1 (current) | 445 kB | Shaun Ewing | Mar 06, 1928 00:00 | US-1661167-A // System of picture transmission // Clark Alva B. ; Gannett Danforth K. // American Telephone & Telegraph | ||||
| PDF File 1642703.pdf | 445 kB | Shaun Ewing | Sept 20, 1927 00:00 |
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US-1642703-A // Carrier telegraph receiver // Thorp Vaughn P. // American Telephone & Telegraph | |||
| Version 1 (current) | 445 kB | Shaun Ewing | Sept 20, 1927 00:00 | US-1642703-A // Carrier telegraph receiver // Thorp Vaughn P. // American Telephone & Telegraph |
