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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1851090.pdf | 556 kB | Shaun Ewing | Mar 29, 1932 00:00 |
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US-1851090-A // Transmission delay circuits // Fetter Charles H. // American Telephone & Telegraph | |||
| Version 1 (current) | 556 kB | Shaun Ewing | Mar 29, 1932 00:00 | US-1851090-A // Transmission delay circuits // Fetter Charles H. // American Telephone & Telegraph | ||||
| PDF File 2075927.pdf | 556 kB | Shaun Ewing | Apr 06, 1937 00:00 |
|
US-2075927-A // Shielding system // Bowen Arnold Everett // American Telephone & Telegraph | |||
| Version 1 (current) | 556 kB | Shaun Ewing | Apr 06, 1937 00:00 | US-2075927-A // Shielding system // Bowen Arnold Everett // American Telephone & Telegraph | ||||
| PDF File 2018140.pdf | 556 kB | Shaun Ewing | Oct 22, 1935 00:00 |
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US-2018140-A // Band pass network // Low Herbert W. // American Telephone & Telegraph | |||
| Version 1 (current) | 556 kB | Shaun Ewing | Oct 22, 1935 00:00 | US-2018140-A // Band pass network // Low Herbert W. // American Telephone & Telegraph | ||||
| PDF File 1796486.pdf | 554 kB | Shaun Ewing | Mar 17, 1931 00:00 |
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US-1796486-A // Amplifier for short electric waves // Southworth George C. // American Telephone & Telegraph | |||
| Version 1 (current) | 554 kB | Shaun Ewing | Mar 17, 1931 00:00 | US-1796486-A // Amplifier for short electric waves // Southworth George C. // American Telephone & Telegraph | ||||
| PDF File 2025912.pdf | 554 kB | Shaun Ewing | Dec 31, 1935 00:00 |
|
US-2025912-A // Signaling system employing glow discharges // Swart Leland Kasson // American Telephone & Telegraph | |||
| Version 1 (current) | 554 kB | Shaun Ewing | Dec 31, 1935 00:00 | US-2025912-A // Signaling system employing glow discharges // Swart Leland Kasson // American Telephone & Telegraph | ||||
| PDF File 2121282.pdf | 553 kB | Shaun Ewing | Jun 21, 1938 00:00 |
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US-2121282-A // Combined telephone and fire alarm system // Bradford Raymond Carter // American Telephone & Telegraph | |||
| Version 1 (current) | 553 kB | Shaun Ewing | Jun 21, 1938 00:00 | US-2121282-A // Combined telephone and fire alarm system // Bradford Raymond Carter // American Telephone & Telegraph | ||||
| PDF File 1867638.pdf | 553 kB | Shaun Ewing | Jul 19, 1932 00:00 |
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US-1867638-A // Telegraph printer // Weaver Allan // American Telephone & Telegraph | |||
| Version 1 (current) | 553 kB | Shaun Ewing | Jul 19, 1932 00:00 | US-1867638-A // Telegraph printer // Weaver Allan // American Telephone & Telegraph | ||||
| PDF File 2073983.pdf | 553 kB | Shaun Ewing | Mar 16, 1937 00:00 |
|
US-2073983-A // Registering system // Anderson Emil N. // American Telephone & Telegraph | |||
| Version 1 (current) | 553 kB | Shaun Ewing | Mar 16, 1937 00:00 | US-2073983-A // Registering system // Anderson Emil N. // American Telephone & Telegraph | ||||
| PDF File 1997705.pdf | 549 kB | Shaun Ewing | Apr 16, 1935 00:00 |
|
US-1997705-A // Calling arrangement for radiotelephone circuits // Taylor Edmund R. ; Taylor Charles C. // American Telephone & Telegraph | |||
| Version 1 (current) | 549 kB | Shaun Ewing | Apr 16, 1935 00:00 | US-1997705-A // Calling arrangement for radiotelephone circuits // Taylor Edmund R. ; Taylor Charles C. // American Telephone & Telegraph | ||||
| PDF File 2224277.pdf | 549 kB | Shaun Ewing | Dec 10, 1940 00:00 |
|
US-2224277-A // Antenna selector switch // Talley Robert Roark // American Telephone & Telegraph | |||
| Version 1 (current) | 549 kB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224277-A // Antenna selector switch // Talley Robert Roark // American Telephone & Telegraph | ||||
| PDF File 2108186.pdf | 547 kB | Shaun Ewing | Feb 15, 1938 00:00 |
|
US-2108186-A // Two-way signaling system // Abraham Leonard Gladstone // American Telephone & Telegraph | |||
| Version 1 (current) | 547 kB | Shaun Ewing | Feb 15, 1938 00:00 | US-2108186-A // Two-way signaling system // Abraham Leonard Gladstone // American Telephone & Telegraph | ||||
| PDF File 2138966.pdf | 547 kB | Shaun Ewing | Dec 06, 1938 00:00 |
|
US-2138966-A // Radio compass system // Hafner Gilbert Mark // American Telephone & Telegraph | |||
| Version 1 (current) | 547 kB | Shaun Ewing | Dec 06, 1938 00:00 | US-2138966-A // Radio compass system // Hafner Gilbert Mark // American Telephone & Telegraph | ||||
| PDF File 1830834.pdf | 547 kB | Shaun Ewing | Nov 10, 1931 00:00 |
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US-1830834-A // Telephone system // Green Irving W. // American Telephone & Telegraph | |||
| Version 1 (current) | 547 kB | Shaun Ewing | Nov 10, 1931 00:00 | US-1830834-A // Telephone system // Green Irving W. // American Telephone & Telegraph | ||||
| PDF File 2184916.pdf | 545 kB | Shaun Ewing | Dec 26, 1939 00:00 |
|
US-2184916-A // Start-stop printing telegraph system // Howle Louis Wells // American Telephone & Telegraph | |||
| Version 1 (current) | 545 kB | Shaun Ewing | Dec 26, 1939 00:00 | US-2184916-A // Start-stop printing telegraph system // Howle Louis Wells // American Telephone & Telegraph | ||||
| PDF File 1934679.pdf | 545 kB | Shaun Ewing | Nov 14, 1933 00:00 |
|
US-1934679-A // Coin controlled device // Bonorden Allen R. // American Telephone & Telegraph | |||
| Version 1 (current) | 545 kB | Shaun Ewing | Nov 14, 1933 00:00 | US-1934679-A // Coin controlled device // Bonorden Allen R. // American Telephone & Telegraph | ||||
| PDF File 1935744.pdf | 543 kB | Shaun Ewing | Nov 21, 1933 00:00 |
|
US-1935744-A // Duplex radio system // Holden William Henry Towne // American Telephone And Telcgra | |||
| Version 1 (current) | 543 kB | Shaun Ewing | Nov 21, 1933 00:00 | US-1935744-A // Duplex radio system // Holden William Henry Towne // American Telephone And Telcgra | ||||
| PDF File 1828823.pdf | 541 kB | Shaun Ewing | Oct 27, 1931 00:00 |
|
US-1828823-A // Combined telephone and telegraph system // Taylor Edmund R. // American Telephone & Telegraph | |||
| Version 1 (current) | 541 kB | Shaun Ewing | Oct 27, 1931 00:00 | US-1828823-A // Combined telephone and telegraph system // Taylor Edmund R. // American Telephone & Telegraph | ||||
| PDF File 2175388.pdf | 540 kB | Shaun Ewing | Oct 10, 1939 00:00 |
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US-2175388-A // Picture broadcasting system // Gurley Roger Knight // American Telephone & Telegraph | |||
| Version 1 (current) | 540 kB | Shaun Ewing | Oct 10, 1939 00:00 | US-2175388-A // Picture broadcasting system // Gurley Roger Knight // American Telephone & Telegraph | ||||
| PDF File 1928610.pdf | 539 kB | Shaun Ewing | Oct 03, 1933 00:00 |
|
US-1928610-A // High frequency signaling system // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 539 kB | Shaun Ewing | Oct 03, 1933 00:00 | US-1928610-A // High frequency signaling system // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1866669.pdf | 539 kB | Shaun Ewing | Jul 12, 1932 00:00 |
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US-1866669-A // Impulse transmitter // Rhodes William A. // American Telephone & Telegraph | |||
| Version 1 (current) | 539 kB | Shaun Ewing | Jul 12, 1932 00:00 | US-1866669-A // Impulse transmitter // Rhodes William A. // American Telephone & Telegraph |
