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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1668637.pdf | 1.08 MB | Shaun Ewing | May 08, 1928 00:00 |
|
US-1668637-A // Directive radio repeating system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.08 MB | Shaun Ewing | May 08, 1928 00:00 | US-1668637-A // Directive radio repeating system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph | ||||
| PDF File 1571991.pdf | 1.07 MB | Shaun Ewing | Feb 09, 1926 00:00 |
|
US-1571991-A // Telephone ringing system // Bailey Rand S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.07 MB | Shaun Ewing | Feb 09, 1926 00:00 | US-1571991-A // Telephone ringing system // Bailey Rand S. // American Telephone & Telegraph | ||||
| PDF File 1587574.pdf | 1.07 MB | Shaun Ewing | Jun 08, 1926 00:00 |
|
US-1587574-A // Doubly-periodic wave filter // Zobel Otto J. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.07 MB | Shaun Ewing | Jun 08, 1926 00:00 | US-1587574-A // Doubly-periodic wave filter // Zobel Otto J. // American Telephone & Telegraph | ||||
| PDF File 1647796.pdf | 1.07 MB | Shaun Ewing | Nov 01, 1927 00:00 |
|
US-1647796-A // Telephone system // Glezen Lee L. ; Shackleton Samuel P. ; Vroom Edward // Western Electric Co ; American Telephone & Telegraph | |||
| Version 1 (current) | 1.07 MB | Shaun Ewing | Nov 01, 1927 00:00 | US-1647796-A // Telephone system // Glezen Lee L. ; Shackleton Samuel P. ; Vroom Edward // Western Electric Co ; American Telephone & Telegraph | ||||
| PDF File 1614545.pdf | 1.07 MB | Shaun Ewing | Jan 18, 1927 00:00 |
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US-1614545-A // Carrier telegraph circuits // Deardorff Ralph W. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.07 MB | Shaun Ewing | Jan 18, 1927 00:00 | US-1614545-A // Carrier telegraph circuits // Deardorff Ralph W. // American Telephone & Telegraph | ||||
| PDF File 1588437.pdf | 1.07 MB | Shaun Ewing | Jun 15, 1926 00:00 |
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US-1588437-A // Telephone system // Bailey Rand S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.07 MB | Shaun Ewing | Jun 15, 1926 00:00 | US-1588437-A // Telephone system // Bailey Rand S. // American Telephone & Telegraph | ||||
| PDF File 1453430.pdf | 1.06 MB | Shaun Ewing | May 01, 1923 00:00 |
|
US-1453430-A // Voice-operated relay // Blackwell Otto B. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.06 MB | Shaun Ewing | May 01, 1923 00:00 | US-1453430-A // Voice-operated relay // Blackwell Otto B. // American Telephone & Telegraph | ||||
| PDF File 1570741.pdf | 1.06 MB | Shaun Ewing | Jan 26, 1926 00:00 |
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US-1570741-A // Testing system for machine-switching circuits // Harden William H. ; Graefenecker Michael A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.06 MB | Shaun Ewing | Jan 26, 1926 00:00 | US-1570741-A // Testing system for machine-switching circuits // Harden William H. ; Graefenecker Michael A. // American Telephone & Telegraph | ||||
| PDF File 1743260.pdf | 1.05 MB | Shaun Ewing | Jan 14, 1930 00:00 |
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US-1743260-A // Means and method for maintaining constant transmission efficiency // Zinn Manvel K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Jan 14, 1930 00:00 | US-1743260-A // Means and method for maintaining constant transmission efficiency // Zinn Manvel K. // American Telephone & Telegraph | ||||
| PDF File 1372050.pdf | 1.05 MB | Shaun Ewing | Mar 22, 1921 00:00 |
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US-1372050-A // Busy-signal-testing apparatus // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Mar 22, 1921 00:00 | US-1372050-A // Busy-signal-testing apparatus // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1746304.pdf | 1.05 MB | Shaun Ewing | Feb 11, 1930 00:00 |
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US-1746304-A // Method for measuring the end-section capacity of coil-loaded telephone circuits // Clark Alva B. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Feb 11, 1930 00:00 | US-1746304-A // Method for measuring the end-section capacity of coil-loaded telephone circuits // Clark Alva B. // American Telephone & Telegraph | ||||
| PDF File 1498592.pdf | 1.04 MB | Shaun Ewing | Jun 24, 1924 00:00 |
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US-1498592-A // Telephone system // Toomey John F. ; Loynes Owen H. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.04 MB | Shaun Ewing | Jun 24, 1924 00:00 | US-1498592-A // Telephone system // Toomey John F. ; Loynes Owen H. // American Telephone & Telegraph | ||||
| PDF File 1757181.pdf | 1.04 MB | Shaun Ewing | May 06, 1930 00:00 |
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US-1757181-A // Privacy system for telephone transmission // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 1.04 MB | Shaun Ewing | May 06, 1930 00:00 | US-1757181-A // Privacy system for telephone transmission // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1383750.pdf | 1.04 MB | Shaun Ewing | Jul 05, 1921 00:00 |
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US-1383750-A // Alternating-current signaling system // Parker Ralzemond D. ; Hamilton Baxter P. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.04 MB | Shaun Ewing | Jul 05, 1921 00:00 | US-1383750-A // Alternating-current signaling system // Parker Ralzemond D. ; Hamilton Baxter P. // American Telephone & Telegraph | ||||
| PDF File 1729645.pdf | 1.03 MB | Shaun Ewing | Oct 01, 1929 00:00 |
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US-1729645-A // Signaling system // Mertz Pierre // American Telephone & Telegraph | |||
| Version 1 (current) | 1.03 MB | Shaun Ewing | Oct 01, 1929 00:00 | US-1729645-A // Signaling system // Mertz Pierre // American Telephone & Telegraph | ||||
| PDF File 1779492.pdf | 1.02 MB | Shaun Ewing | Oct 28, 1930 00:00 |
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US-1779492-A // Carrier-current telegraph system // Rea Wilton T. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.02 MB | Shaun Ewing | Oct 28, 1930 00:00 | US-1779492-A // Carrier-current telegraph system // Rea Wilton T. // American Telephone & Telegraph | ||||
| PDF File 1481284.pdf | 1.02 MB | Shaun Ewing | Jan 22, 1924 00:00 |
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US-1481284-A // Means for and method of amplitude selection // Deardorff Ralph W. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.02 MB | Shaun Ewing | Jan 22, 1924 00:00 | US-1481284-A // Means for and method of amplitude selection // Deardorff Ralph W. // American Telephone & Telegraph | ||||
| PDF File 1668638.pdf | 1.01 MB | Shaun Ewing | May 08, 1928 00:00 |
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US-1668638-A // Directive radio repeating system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | May 08, 1928 00:00 | US-1668638-A // Directive radio repeating system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph | ||||
| PDF File 1493600.pdf | 1.01 MB | Shaun Ewing | May 13, 1924 00:00 |
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US-1493600-A // Wave filter // Campbell George A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | May 13, 1924 00:00 | US-1493600-A // Wave filter // Campbell George A. // American Telephone & Telegraph | ||||
| PDF File 1644004.pdf | 1.01 MB | Shaun Ewing | Oct 04, 1927 00:00 |
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US-1644004-A // Electrical wave filter // Zobel Otto J. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | Oct 04, 1927 00:00 | US-1644004-A // Electrical wave filter // Zobel Otto J. // American Telephone & Telegraph |
