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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1561526.pdf | 1.98 MB | Shaun Ewing | Nov 17, 1925 00:00 |
|
US-1561526-A // Printing telegraphy // Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.98 MB | Shaun Ewing | Nov 17, 1925 00:00 | US-1561526-A // Printing telegraphy // Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1623118.pdf | 1.95 MB | Shaun Ewing | Apr 05, 1927 00:00 |
|
US-1623118-A // Telephone-exchange system // Jacobsen Emil // American Telephone & Telegraph | |||
| Version 1 (current) | 1.95 MB | Shaun Ewing | Apr 05, 1927 00:00 | US-1623118-A // Telephone-exchange system // Jacobsen Emil // American Telephone & Telegraph | ||||
| PDF File 1416765.pdf | 1.95 MB | Shaun Ewing | May 23, 1922 00:00 |
|
US-1416765-A // Ciphering device // Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.95 MB | Shaun Ewing | May 23, 1922 00:00 | US-1416765-A // Ciphering device // Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1488847.pdf | 1.89 MB | Shaun Ewing | Apr 01, 1924 00:00 |
|
US-1488847-A // Telephone system // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.89 MB | Shaun Ewing | Apr 01, 1924 00:00 | US-1488847-A // Telephone system // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1747218.pdf | 1.84 MB | Shaun Ewing | Feb 18, 1930 00:00 |
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US-1747218-A // Automatic selection of receiving channels // Bohn William C. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.84 MB | Shaun Ewing | Feb 18, 1930 00:00 | US-1747218-A // Automatic selection of receiving channels // Bohn William C. // 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 1713603.pdf | 1.82 MB | Shaun Ewing | May 21, 1929 00:00 |
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US-1713603-A // Electrical network // Hoyt Ray S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.82 MB | Shaun Ewing | May 21, 1929 00:00 | US-1713603-A // Electrical network // Hoyt Ray S. // American Telephone & Telegraph | ||||
| PDF File 1637324.pdf | 1.81 MB | Shaun Ewing | Jul 26, 1927 00:00 |
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US-1637324-A // Printing-telegraph-exchange system // Perry Donald B. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.81 MB | Shaun Ewing | Jul 26, 1927 00:00 | US-1637324-A // Printing-telegraph-exchange system // Perry Donald B. // American Telephone & Telegraph | ||||
| PDF File 1447204.pdf | 1.81 MB | Shaun Ewing | Mar 06, 1923 00:00 |
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US-1447204-A // Plural modulation and demodulation circuits // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 1.81 MB | Shaun Ewing | Mar 06, 1923 00:00 | US-1447204-A // Plural modulation and demodulation circuits // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1641218.pdf | 1.80 MB | Shaun Ewing | Sept 06, 1927 00:00 |
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US-1641218-A // Straightforward trunking system // Bailey Rand S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.80 MB | Shaun Ewing | Sept 06, 1927 00:00 | US-1641218-A // Straightforward trunking system // Bailey Rand S. // American Telephone & Telegraph | ||||
| PDF File 1548110.pdf | 1.80 MB | Shaun Ewing | Aug 04, 1925 00:00 |
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US-1548110-A // Telephone toll circuits // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.80 MB | Shaun Ewing | Aug 04, 1925 00:00 | US-1548110-A // Telephone toll circuits // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1541879.pdf | 1.80 MB | Shaun Ewing | Jun 16, 1925 00:00 |
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US-1541879-A // Single polar telegraph circuits // Watson Edward F. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.80 MB | Shaun Ewing | Jun 16, 1925 00:00 | US-1541879-A // Single polar telegraph circuits // Watson Edward F. // American Telephone & Telegraph | ||||
| PDF File 1576658.pdf | 1.79 MB | Shaun Ewing | Mar 16, 1926 00:00 |
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US-1576658-A // Telephone-exchange system // Jacobsen Emil // American Telephone & Telegraph | |||
| Version 1 (current) | 1.79 MB | Shaun Ewing | Mar 16, 1926 00:00 | US-1576658-A // Telephone-exchange system // Jacobsen Emil // American Telephone & Telegraph | ||||
| PDF File 1511013.pdf | 1.77 MB | Shaun Ewing | Oct 07, 1924 00:00 |
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US-1511013-A // Equalization of carrier transmissions // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.77 MB | Shaun Ewing | Oct 07, 1924 00:00 | US-1511013-A // Equalization of carrier transmissions // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1392179.pdf | 1.76 MB | Shaun Ewing | Sept 27, 1921 00:00 |
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US-1392179-A // Operator's trunk-circuit // Kuhn George W. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.76 MB | Shaun Ewing | Sept 27, 1921 00:00 | US-1392179-A // Operator's trunk-circuit // Kuhn George W. // American Telephone & Telegraph | ||||
| PDF File 1517315.pdf | 1.70 MB | Shaun Ewing | Dec 02, 1924 00:00 |
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US-1517315-A // Telephone-exchange system // Rhodes William A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.70 MB | Shaun Ewing | Dec 02, 1924 00:00 | US-1517315-A // Telephone-exchange system // Rhodes William A. // American Telephone & Telegraph | ||||
| PDF File 1750666.pdf | 1.69 MB | Shaun Ewing | Mar 18, 1930 00:00 |
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US-1750666-A // Toll circuit // Glezen Lee L. ; Stigers Morton J. ; Taylor Edmund R. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.69 MB | Shaun Ewing | Mar 18, 1930 00:00 | US-1750666-A // Toll circuit // Glezen Lee L. ; Stigers Morton J. ; Taylor Edmund R. // American Telephone & Telegraph | ||||
| PDF File 1576657.pdf | 1.67 MB | Shaun Ewing | Mar 16, 1926 00:00 |
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US-1576657-A // Telephone-exchange system // Jacobsen Emil // American Telephone & Telegraph | |||
| Version 1 (current) | 1.67 MB | Shaun Ewing | Mar 16, 1926 00:00 | US-1576657-A // Telephone-exchange system // Jacobsen Emil // 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 1772166.pdf | 1.66 MB | Shaun Ewing | Aug 05, 1930 00:00 |
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US-1772166-A // Multiplex broadcast system // Taylor Edmund R. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.66 MB | Shaun Ewing | Aug 05, 1930 00:00 | US-1772166-A // Multiplex broadcast system // Taylor Edmund R. // American Telephone & Telegraph |
