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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1521664.pdf | 360 kB | Shaun Ewing | Jan 06, 1925 00:00 |
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US-1521664-A // Testing circuits for echo suppressors // Wright Sumner B. // American Telephone & Telegraph | |||
| Version 1 (current) | 360 kB | Shaun Ewing | Jan 06, 1925 00:00 | US-1521664-A // Testing circuits for echo suppressors // Wright Sumner B. // American Telephone & Telegraph | ||||
| PDF File 1521674.pdf | 1023 kB | Shaun Ewing | Jan 06, 1925 00:00 |
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US-1521674-A // Carrier telegraph circuits // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 1023 kB | Shaun Ewing | Jan 06, 1925 00:00 | US-1521674-A // Carrier telegraph circuits // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1521685.pdf | 381 kB | Shaun Ewing | Jan 06, 1925 00:00 |
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US-1521685-A // Carrier telegraph circuits // Hamilton Baxter P. // American Telephone & Telegraph | |||
| Version 1 (current) | 381 kB | Shaun Ewing | Jan 06, 1925 00:00 | US-1521685-A // Carrier telegraph circuits // Hamilton Baxter P. // American Telephone & Telegraph | ||||
| PDF File 1522044.pdf | 361 kB | Shaun Ewing | Jan 06, 1925 00:00 |
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US-1522044-A // Secret-communication system // Bown Ralph // American Telephone & Telegraph | |||
| Version 1 (current) | 361 kB | Shaun Ewing | Jan 06, 1925 00:00 | US-1522044-A // Secret-communication system // Bown Ralph // American Telephone & Telegraph | ||||
| PDF File 1522268.pdf | 648 kB | Shaun Ewing | Jan 06, 1925 00:00 |
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US-1522268-A // Automatic telegraph repeater // Potts Louis M. // American Telephone & Telegraph | |||
| Version 1 (current) | 648 kB | Shaun Ewing | Jan 06, 1925 00:00 | US-1522268-A // Automatic telegraph repeater // Potts Louis M. // American Telephone & Telegraph | ||||
| PDF File 1522580.pdf | 1.84 MB | Shaun Ewing | Jan 13, 1925 00:00 |
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US-1522580-A // Composited multiplex transmission system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 1.84 MB | Shaun Ewing | Jan 13, 1925 00:00 | US-1522580-A // Composited multiplex transmission system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1522581.pdf | 381 kB | Shaun Ewing | Jan 13, 1925 00:00 |
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US-1522581-A // Radio broadcasting system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 381 kB | Shaun Ewing | Jan 13, 1925 00:00 | US-1522581-A // Radio broadcasting system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1523473.pdf | 268 kB | Shaun Ewing | Jan 20, 1925 00:00 |
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US-1523473-A // Repeater circuits // Clark Alva B. // American Telephone & Telegraph | |||
| Version 1 (current) | 268 kB | Shaun Ewing | Jan 20, 1925 00:00 | US-1523473-A // Repeater circuits // Clark Alva B. // American Telephone & Telegraph | ||||
| PDF File 1523488.pdf | 351 kB | Shaun Ewing | Jan 20, 1925 00:00 |
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US-1523488-A // Telegraph signal circuits // Moore Robert P. // American Telephone & Telegraph | |||
| Version 1 (current) | 351 kB | Shaun Ewing | Jan 20, 1925 00:00 | US-1523488-A // Telegraph signal circuits // Moore Robert P. // American Telephone & Telegraph | ||||
| PDF File 1524357.pdf | 240 kB | Shaun Ewing | Jan 27, 1925 00:00 |
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US-1524357-A // Telegraphy // Hudson George E. // American Telephone & Telegraph | |||
| Version 1 (current) | 240 kB | Shaun Ewing | Jan 27, 1925 00:00 | US-1524357-A // Telegraphy // Hudson George E. // American Telephone & Telegraph | ||||
| PDF File 1524379.pdf | 739 kB | Shaun Ewing | Jan 27, 1925 00:00 |
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US-1524379-A // Telephone-exchange system // Bailey Rand S. // American Telephone & Telegraph | |||
| Version 1 (current) | 739 kB | Shaun Ewing | Jan 27, 1925 00:00 | US-1524379-A // Telephone-exchange system // Bailey Rand S. // American Telephone & Telegraph | ||||
| PDF File 1525053.pdf | 283 kB | Shaun Ewing | Feb 03, 1925 00:00 |
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US-1525053-A // Program transmission over wires // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 283 kB | Shaun Ewing | Feb 03, 1925 00:00 | US-1525053-A // Program transmission over wires // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1525054.pdf | 1.67 MB | Shaun Ewing | Feb 03, 1925 00:00 |
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US-1525054-A // Power and amplifying equipment for distribution of intelligence over wires // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.67 MB | Shaun Ewing | Feb 03, 1925 00:00 | US-1525054-A // Power and amplifying equipment for distribution of intelligence over wires // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1525522.pdf | 1.39 MB | Shaun Ewing | Feb 10, 1925 00:00 |
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US-1525522-A // Printing telegraph system // Vernam Gilbert Sanford // American Telephone & Telegraph | |||
| Version 1 (current) | 1.39 MB | Shaun Ewing | Feb 10, 1925 00:00 | US-1525522-A // Printing telegraph system // Vernam Gilbert Sanford // American Telephone & Telegraph | ||||
| PDF File 1525523.pdf | 992 kB | Shaun Ewing | Feb 10, 1925 00:00 |
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US-1525523-A // Printing telegraphy // Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 992 kB | Shaun Ewing | Feb 10, 1925 00:00 | US-1525523-A // Printing telegraphy // Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1526348.pdf | 252 kB | Shaun Ewing | Feb 17, 1925 00:00 |
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US-1526348-A // Two-party signaling system // Jr. James M. Labaugh, // American Telephone & Telegraph | |||
| Version 1 (current) | 252 kB | Shaun Ewing | Feb 17, 1925 00:00 | US-1526348-A // Two-party signaling system // Jr. James M. Labaugh, // American Telephone & Telegraph | ||||
| PDF File 1526402.pdf | 291 kB | Shaun Ewing | Feb 17, 1925 00:00 |
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US-1526402-A // Loop circuits for telegraph repeaters // Watson Edward F. // American Telephone & Telegraph | |||
| Version 1 (current) | 291 kB | Shaun Ewing | Feb 17, 1925 00:00 | US-1526402-A // Loop circuits for telegraph repeaters // Watson Edward F. // American Telephone & Telegraph | ||||
| PDF File 1527318.pdf | 219 kB | Shaun Ewing | Feb 24, 1925 00:00 |
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US-1527318-A // Insulator // Lewis Edwin // American Telephone & Telegraph | |||
| Version 1 (current) | 219 kB | Shaun Ewing | Feb 24, 1925 00:00 | US-1527318-A // Insulator // Lewis Edwin // American Telephone & Telegraph | ||||
| PDF File 1527345.pdf | 566 kB | Shaun Ewing | Feb 24, 1925 00:00 |
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US-1527345-A // Electrical testing device // Birchall Benjamin H. // American Telephone & Telegraph | |||
| Version 1 (current) | 566 kB | Shaun Ewing | Feb 24, 1925 00:00 | US-1527345-A // Electrical testing device // Birchall Benjamin H. // American Telephone & Telegraph | ||||
| PDF File 1528010.pdf | 757 kB | Shaun Ewing | Mar 03, 1925 00:00 |
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US-1528010-A // Radio signaling system // Demarest Charles S. ; Almquist Milton L. // American Telephone & Telegraph | |||
| Version 1 (current) | 757 kB | Shaun Ewing | Mar 03, 1925 00:00 | US-1528010-A // Radio signaling system // Demarest Charles S. ; Almquist Milton L. // American Telephone & Telegraph |
