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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1520793.pdf | 266 kB | Shaun Ewing | Dec 30, 1924 00:00 |
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US-1520793-A // Current-regulating device // Young Rowland L. // American Telephone & Telegraph | |||
| Version 1 (current) | 266 kB | Shaun Ewing | Dec 30, 1924 00:00 | US-1520793-A // Current-regulating device // Young Rowland L. // American Telephone & Telegraph | ||||
| PDF File 1532172.pdf | 266 kB | Shaun Ewing | Apr 07, 1925 00:00 |
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US-1532172-A // Means for receiving weak signal currents // Carson John R. // American Telephone & Telegraph | |||
| Version 1 (current) | 266 kB | Shaun Ewing | Apr 07, 1925 00:00 | US-1532172-A // Means for receiving weak signal currents // Carson John R. // American Telephone & Telegraph | ||||
| PDF File 1626743.pdf | 265 kB | Shaun Ewing | May 03, 1927 00:00 |
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US-1626743-A // Cone loud-speaker diaphragm // Martin William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 265 kB | Shaun Ewing | May 03, 1927 00:00 | US-1626743-A // Cone loud-speaker diaphragm // Martin William H. // American Telephone & Telegraph | ||||
| PDF File 1548119.pdf | 265 kB | Shaun Ewing | Aug 04, 1925 00:00 |
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US-1548119-A // Busy-test circuit for telephone cord circuits // Dietze Eginhard // American Telephone & Telegraph | |||
| Version 1 (current) | 265 kB | Shaun Ewing | Aug 04, 1925 00:00 | US-1548119-A // Busy-test circuit for telephone cord circuits // Dietze Eginhard // American Telephone & Telegraph | ||||
| PDF File 1745457.pdf | 264 kB | Shaun Ewing | Feb 04, 1930 00:00 |
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US-1745457-A // Echo suppressor // Silent Harold C. // American Telephone & Telegraph | |||
| Version 1 (current) | 264 kB | Shaun Ewing | Feb 04, 1930 00:00 | US-1745457-A // Echo suppressor // Silent Harold C. // American Telephone & Telegraph | ||||
| PDF File 1476721.pdf | 264 kB | Shaun Ewing | Dec 11, 1923 00:00 |
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US-1476721-A // Frequency-control system // Martin De Loss K. // American Telephone & Telegraph | |||
| Version 1 (current) | 264 kB | Shaun Ewing | Dec 11, 1923 00:00 | US-1476721-A // Frequency-control system // Martin De Loss K. // American Telephone & Telegraph | ||||
| PDF File 1403544.pdf | 263 kB | Shaun Ewing | Jan 17, 1922 00:00 |
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US-1403544-A // Transmission equalization arrangement // Darrow Wirt E. // American Telephone & Telegraph | |||
| Version 1 (current) | 263 kB | Shaun Ewing | Jan 17, 1922 00:00 | US-1403544-A // Transmission equalization arrangement // Darrow Wirt E. // American Telephone & Telegraph | ||||
| PDF File 1735905.pdf | 263 kB | Shaun Ewing | Nov 19, 1929 00:00 |
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US-1735905-A // Microphone mounting // Martin William H. ; Strieby Maurice E. // American Telephone & Telegraph | |||
| Version 1 (current) | 263 kB | Shaun Ewing | Nov 19, 1929 00:00 | US-1735905-A // Microphone mounting // Martin William H. ; Strieby Maurice E. // American Telephone & Telegraph | ||||
| PDF File 1786412.pdf | 263 kB | Shaun Ewing | Dec 23, 1930 00:00 |
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US-1786412-A // Shielding arrangement // Crisson George // American Telephone & Telegraph | |||
| Version 1 (current) | 263 kB | Shaun Ewing | Dec 23, 1930 00:00 | US-1786412-A // Shielding arrangement // Crisson George // American Telephone & Telegraph | ||||
| PDF File 1638432.pdf | 262 kB | Shaun Ewing | Aug 09, 1927 00:00 |
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US-1638432-A // Strand tightener // Connors Neilson D. // American Telephone & Telegraph | |||
| Version 1 (current) | 262 kB | Shaun Ewing | Aug 09, 1927 00:00 | US-1638432-A // Strand tightener // Connors Neilson D. // American Telephone & Telegraph | ||||
| PDF File 1551603.pdf | 262 kB | Shaun Ewing | Sept 01, 1925 00:00 |
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US-1551603-A // Adjustable mold for making plastic forms // Melosi Hugo E. ; Gray Joseph H. // American Telephone & Telegraph | |||
| Version 1 (current) | 262 kB | Shaun Ewing | Sept 01, 1925 00:00 | US-1551603-A // Adjustable mold for making plastic forms // Melosi Hugo E. ; Gray Joseph H. // American Telephone & Telegraph | ||||
| PDF File 1497714.pdf | 262 kB | Shaun Ewing | Jun 17, 1924 00:00 |
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US-1497714-A // Secret-communication system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 262 kB | Shaun Ewing | Jun 17, 1924 00:00 | US-1497714-A // Secret-communication system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1561530.pdf | 261 kB | Shaun Ewing | Nov 17, 1925 00:00 |
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US-1561530-A // Telegraph repeater circuits // Conover Elmer J. // American Telephone & Telegraph | |||
| Version 1 (current) | 261 kB | Shaun Ewing | Nov 17, 1925 00:00 | US-1561530-A // Telegraph repeater circuits // Conover Elmer J. // American Telephone & Telegraph | ||||
| PDF File 1634271.pdf | 261 kB | Shaun Ewing | Jul 05, 1927 00:00 |
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US-1634271-A // Composite ringer // Shackleton Samuel P. // American Telephone & Telegraph | |||
| Version 1 (current) | 261 kB | Shaun Ewing | Jul 05, 1927 00:00 | US-1634271-A // Composite ringer // Shackleton Samuel P. // American Telephone & Telegraph | ||||
| PDF File 1640435.pdf | 259 kB | Shaun Ewing | Aug 30, 1927 00:00 |
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US-1640435-A // Sighting instrument for measuring angles // Armstrong Frank C. // American Telephone & Telegraph | |||
| Version 1 (current) | 259 kB | Shaun Ewing | Aug 30, 1927 00:00 | US-1640435-A // Sighting instrument for measuring angles // Armstrong Frank C. // American Telephone & Telegraph | ||||
| PDF File 1772551.pdf | 259 kB | Shaun Ewing | Aug 12, 1930 00:00 |
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US-1772551-A // Echo suppressor // Mitchell Doren ; Silent Harold C. // American Telephone & Telegraph | |||
| Version 1 (current) | 259 kB | Shaun Ewing | Aug 12, 1930 00:00 | US-1772551-A // Echo suppressor // Mitchell Doren ; Silent Harold C. // American Telephone & Telegraph | ||||
| PDF File 1660388.pdf | 259 kB | Shaun Ewing | Feb 28, 1928 00:00 |
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US-1660388-A // System of synchronizing signaling apparatus // Matte Andrew L. // American Telephone & Telegraph | |||
| Version 1 (current) | 259 kB | Shaun Ewing | Feb 28, 1928 00:00 | US-1660388-A // System of synchronizing signaling apparatus // Matte Andrew L. // American Telephone & Telegraph | ||||
| PDF File 1539902.pdf | 259 kB | Shaun Ewing | Jun 02, 1925 00:00 |
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US-1539902-A // Carrier transmission over power circuits // Honaman Richard K. // American Telephone & Telegraph | |||
| Version 1 (current) | 259 kB | Shaun Ewing | Jun 02, 1925 00:00 | US-1539902-A // Carrier transmission over power circuits // Honaman Richard K. // American Telephone & Telegraph | ||||
| PDF File 1408567.pdf | 259 kB | Shaun Ewing | Mar 07, 1922 00:00 |
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US-1408567-A // Transmission equalization arrangement // Darrow Leo H. // American Telephone & Telegraph | |||
| Version 1 (current) | 259 kB | Shaun Ewing | Mar 07, 1922 00:00 | US-1408567-A // Transmission equalization arrangement // Darrow Leo H. // American Telephone & Telegraph | ||||
| PDF File 1730368.pdf | 258 kB | Shaun Ewing | Oct 08, 1929 00:00 |
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US-1730368-A // Method of and means for measuring differences in time of propagation of wave fronts of different frequencies over a circuit // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 258 kB | Shaun Ewing | Oct 08, 1929 00:00 | US-1730368-A // Method of and means for measuring differences in time of propagation of wave fronts of different frequencies over a circuit // Herman Joseph // American Telephone & Telegraph |
