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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1800303.pdf | 833 kB | Shaun Ewing | Apr 14, 1931 00:00 |
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US-1800303-A // Automatic regulating arrangement // Lindsay Russell H. // American Telephone & Telegraph | |||
| Version 1 (current) | 833 kB | Shaun Ewing | Apr 14, 1931 00:00 | US-1800303-A // Automatic regulating arrangement // Lindsay Russell H. // American Telephone & Telegraph | ||||
| PDF File 2101995.pdf | 833 kB | Shaun Ewing | Dec 14, 1937 00:00 |
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US-2101995-A // Telegraph switching system // Gardner Leland Adams ; Singer Fred John // American Telephone & Telegraph | |||
| Version 1 (current) | 833 kB | Shaun Ewing | Dec 14, 1937 00:00 | US-2101995-A // Telegraph switching system // Gardner Leland Adams ; Singer Fred John // American Telephone & Telegraph | ||||
| PDF File 1858364.pdf | 832 kB | Shaun Ewing | May 17, 1932 00:00 |
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US-1858364-A // Multiple slide wire potentiometer // Jr. Walter Koenig, // American Telephone & Telegraph | |||
| Version 1 (current) | 832 kB | Shaun Ewing | May 17, 1932 00:00 | US-1858364-A // Multiple slide wire potentiometer // Jr. Walter Koenig, // American Telephone & Telegraph | ||||
| PDF File 2082924.pdf | 830 kB | Shaun Ewing | Jun 08, 1937 00:00 |
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US-2082924-A // Printing telegraph system // Watson Edward Fisk // American Telephone & Telegraph | |||
| Version 1 (current) | 830 kB | Shaun Ewing | Jun 08, 1937 00:00 | US-2082924-A // Printing telegraph system // Watson Edward Fisk // American Telephone & Telegraph | ||||
| PDF File 1914407.pdf | 827 kB | Shaun Ewing | Jun 20, 1933 00:00 |
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US-1914407-A // Signaling system // Demarest Charles S. // American Telephone & Telegraph | |||
| Version 1 (current) | 827 kB | Shaun Ewing | Jun 20, 1933 00:00 | US-1914407-A // Signaling system // Demarest Charles S. // American Telephone & Telegraph | ||||
| PDF File 1871923.pdf | 825 kB | Shaun Ewing | Aug 16, 1932 00:00 |
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US-1871923-A // Printing telegraph system // Singer Fred J. ; Gardner Leland A. // American Telephone & Telegraph | |||
| Version 1 (current) | 825 kB | Shaun Ewing | Aug 16, 1932 00:00 | US-1871923-A // Printing telegraph system // Singer Fred J. ; Gardner Leland A. // American Telephone & Telegraph | ||||
| PDF File 1788007.pdf | 823 kB | Shaun Ewing | Jan 06, 1931 00:00 |
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US-1788007-A // Telephone repeater system // Abbott Henry H. ; Entz Ferdinand S. // American Telephone & Telegraph ; Bell Telephone Labor Inc | |||
| Version 1 (current) | 823 kB | Shaun Ewing | Jan 06, 1931 00:00 | US-1788007-A // Telephone repeater system // Abbott Henry H. ; Entz Ferdinand S. // American Telephone & Telegraph ; Bell Telephone Labor Inc | ||||
| PDF File 1900992.pdf | 822 kB | Shaun Ewing | Mar 14, 1933 00:00 |
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US-1900992-A // Impulse transmission system // Mccann Thomas A. // American Telephone & Telegraph | |||
| Version 1 (current) | 822 kB | Shaun Ewing | Mar 14, 1933 00:00 | US-1900992-A // Impulse transmission system // Mccann Thomas A. // American Telephone & Telegraph | ||||
| PDF File 2132180.pdf | 821 kB | Shaun Ewing | Oct 04, 1938 00:00 |
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US-2132180-A // Two-way signaling system // Mitchell Doren // American Telephone & Telegraph | |||
| Version 1 (current) | 821 kB | Shaun Ewing | Oct 04, 1938 00:00 | US-2132180-A // Two-way signaling system // Mitchell Doren // American Telephone & Telegraph | ||||
| PDF File 2046436.pdf | 821 kB | Shaun Ewing | Jul 07, 1936 00:00 |
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US-2046436-A // Ground impedance measurement // Wascheck George // American Telephone & Telegraph | |||
| Version 1 (current) | 821 kB | Shaun Ewing | Jul 07, 1936 00:00 | US-2046436-A // Ground impedance measurement // Wascheck George // American Telephone & Telegraph | ||||
| PDF File 2004244.pdf | 818 kB | Shaun Ewing | Jun 11, 1935 00:00 |
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US-2004244-A // Selective signaling system // Holden William Henry Towne // American Telephone & Telegraph | |||
| Version 1 (current) | 818 kB | Shaun Ewing | Jun 11, 1935 00:00 | US-2004244-A // Selective signaling system // Holden William Henry Towne // American Telephone & Telegraph | ||||
| PDF File 1827843.pdf | 816 kB | Shaun Ewing | Oct 20, 1931 00:00 |
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US-1827843-A // Piezo electric frequency eliminator // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 816 kB | Shaun Ewing | Oct 20, 1931 00:00 | US-1827843-A // Piezo electric frequency eliminator // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 2099769.pdf | 816 kB | Shaun Ewing | Nov 23, 1937 00:00 |
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US-2099769-A // Circuits embodying negative impedance // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 816 kB | Shaun Ewing | Nov 23, 1937 00:00 | US-2099769-A // Circuits embodying negative impedance // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1789419.pdf | 815 kB | Shaun Ewing | Jan 20, 1931 00:00 |
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US-1789419-A // Radio receiving system // Stone John Stone // American Telephone & Telegraph | |||
| Version 1 (current) | 815 kB | Shaun Ewing | Jan 20, 1931 00:00 | US-1789419-A // Radio receiving system // Stone John Stone // American Telephone & Telegraph | ||||
| PDF File 1954898.pdf | 814 kB | Shaun Ewing | Apr 17, 1934 00:00 |
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US-1954898-A // Radio receiving system // Stone John Stone // American Telephone & Telegraph | |||
| Version 1 (current) | 814 kB | Shaun Ewing | Apr 17, 1934 00:00 | US-1954898-A // Radio receiving system // Stone John Stone // American Telephone & Telegraph | ||||
| PDF File 1860455.pdf | 813 kB | Shaun Ewing | May 31, 1932 00:00 |
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US-1860455-A // Lineman's test set // Dietze Eginhard // American Telephone & Telegraph | |||
| Version 1 (current) | 813 kB | Shaun Ewing | May 31, 1932 00:00 | US-1860455-A // Lineman's test set // Dietze Eginhard // American Telephone & Telegraph | ||||
| PDF File 1913495.pdf | 812 kB | Shaun Ewing | Jun 13, 1933 00:00 |
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US-1913495-A // Multifrequency transmission measuring system // Matte Andrew L. // American Telephone & Telegraph | |||
| Version 1 (current) | 812 kB | Shaun Ewing | Jun 13, 1933 00:00 | US-1913495-A // Multifrequency transmission measuring system // Matte Andrew L. // American Telephone & Telegraph | ||||
| PDF File 1934879.pdf | 810 kB | Shaun Ewing | Nov 14, 1933 00:00 |
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US-1934879-A // Frequency measuring system // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 810 kB | Shaun Ewing | Nov 14, 1933 00:00 | US-1934879-A // Frequency measuring system // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1793598.pdf | 805 kB | Shaun Ewing | Feb 24, 1931 00:00 |
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US-1793598-A // Telephone system // Edwards William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 805 kB | Shaun Ewing | Feb 24, 1931 00:00 | US-1793598-A // Telephone system // Edwards William H. // American Telephone & Telegraph | ||||
| PDF File 2137793.pdf | 803 kB | Shaun Ewing | Nov 22, 1938 00:00 |
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US-2137793-A // Telephone system // Anderson Emil N. ; Getz Emil L. ; Ulrich Horace W. // American Telephone & Telegraph ; Bell Telephone Labor Inc | |||
| Version 1 (current) | 803 kB | Shaun Ewing | Nov 22, 1938 00:00 | US-2137793-A // Telephone system // Anderson Emil N. ; Getz Emil L. ; Ulrich Horace W. // American Telephone & Telegraph ; Bell Telephone Labor Inc |
