Unable to load page tree. It seems that you do not have permission to view the root page.
Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2123229.pdf | 2.18 MB | Shaun Ewing | Jul 12, 1938 00:00 |
|
US-2123229-A // Selector switch // Carpenter Warren W. ; Mallina Rudolph F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.18 MB | Shaun Ewing | Jul 12, 1938 00:00 | US-2123229-A // Selector switch // Carpenter Warren W. ; Mallina Rudolph F. // Bell Telephone Labor Inc | ||||
| PDF File 1880800.pdf | 2.18 MB | Shaun Ewing | Oct 04, 1932 00:00 |
|
US-1880800-A // Regulating circuits // Chesnut Roy W. ; Terry Donald M. ; Kannenberg Walter F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.18 MB | Shaun Ewing | Oct 04, 1932 00:00 | US-1880800-A // Regulating circuits // Chesnut Roy W. ; Terry Donald M. ; Kannenberg Walter F. // Bell Telephone Labor Inc | ||||
| PDF File 2088733.pdf | 2.17 MB | Shaun Ewing | Aug 03, 1937 00:00 |
|
US-2088733-A // Printing telegraph system // White Charles // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.17 MB | Shaun Ewing | Aug 03, 1937 00:00 | US-2088733-A // Printing telegraph system // White Charles // Bell Telephone Labor Inc | ||||
| PDF File 1920238.pdf | 2.17 MB | Shaun Ewing | Aug 01, 1933 00:00 |
|
US-1920238-A // Wave translating system // Black Harold S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.17 MB | Shaun Ewing | Aug 01, 1933 00:00 | US-1920238-A // Wave translating system // Black Harold S. // Bell Telephone Labor Inc | ||||
| PDF File 1957502.pdf | 2.16 MB | Shaun Ewing | May 08, 1934 00:00 |
|
US-1957502-A // Multiplex telegraph system // Locke George A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.16 MB | Shaun Ewing | May 08, 1934 00:00 | US-1957502-A // Multiplex telegraph system // Locke George A. // Bell Telephone Labor Inc | ||||
| PDF File 2092495.pdf | 2.16 MB | Shaun Ewing | Sept 07, 1937 00:00 |
|
US-2092495-A // Telephone system // Baumfalk John // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.16 MB | Shaun Ewing | Sept 07, 1937 00:00 | US-2092495-A // Telephone system // Baumfalk John // Bell Telephone Labor Inc | ||||
| PDF File 2050610.pdf | 2.15 MB | Shaun Ewing | Aug 11, 1936 00:00 |
|
US-2050610-A // Telephone toll switching // Jacobs Oliver B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.15 MB | Shaun Ewing | Aug 11, 1936 00:00 | US-2050610-A // Telephone toll switching // Jacobs Oliver B. // Bell Telephone Labor Inc | ||||
| PDF File 2194298.pdf | 2.13 MB | Shaun Ewing | Mar 19, 1940 00:00 |
|
US-2194298-A // System for the artificial production of vocal or other sounds // Dudley Homer W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.13 MB | Shaun Ewing | Mar 19, 1940 00:00 | US-2194298-A // System for the artificial production of vocal or other sounds // Dudley Homer W. // Bell Telephone Labor Inc | ||||
| PDF File 1904252.pdf | 2.13 MB | Shaun Ewing | Apr 18, 1933 00:00 |
|
US-1904252-A // Telephone system // Robb Theodore D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.13 MB | Shaun Ewing | Apr 18, 1933 00:00 | US-1904252-A // Telephone system // Robb Theodore D. // Bell Telephone Labor Inc | ||||
| PDF File 2206146.pdf | 2.12 MB | Shaun Ewing | Jul 02, 1940 00:00 |
|
US-2206146-A // Control of transmission and two-way signaling systems // Wright Sumner B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.12 MB | Shaun Ewing | Jul 02, 1940 00:00 | US-2206146-A // Control of transmission and two-way signaling systems // Wright Sumner B. // Bell Telephone Labor Inc | ||||
| PDF File 2185599.pdf | 2.09 MB | Shaun Ewing | Jan 02, 1940 00:00 |
|
US-2185599-A // Piezoelectric apparatus // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.09 MB | Shaun Ewing | Jan 02, 1940 00:00 | US-2185599-A // Piezoelectric apparatus // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2203870.pdf | 2.08 MB | Shaun Ewing | Jun 11, 1940 00:00 |
|
US-2203870-A // Multiple channel electro-optical system // Knoop William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.08 MB | Shaun Ewing | Jun 11, 1940 00:00 | US-2203870-A // Multiple channel electro-optical system // Knoop William A. // Bell Telephone Labor Inc | ||||
| PDF File 2042828.pdf | 2.06 MB | Shaun Ewing | Jun 02, 1936 00:00 |
|
US-2042828-A // Telephone system // Buchanan Russell B. ; Kille Lindley A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.06 MB | Shaun Ewing | Jun 02, 1936 00:00 | US-2042828-A // Telephone system // Buchanan Russell B. ; Kille Lindley A. // Bell Telephone Labor Inc | ||||
| PDF File 2092465.pdf | 2.05 MB | Shaun Ewing | Sept 07, 1937 00:00 |
|
US-2092465-A // Telephone system // Matthies William H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.05 MB | Shaun Ewing | Sept 07, 1937 00:00 | US-2092465-A // Telephone system // Matthies William H. // Bell Telephone Labor Inc | ||||
| PDF File 2123178.pdf | 2.05 MB | Shaun Ewing | Jul 12, 1938 00:00 |
|
US-2123178-A // Amplifier // Bode Hendrik W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.05 MB | Shaun Ewing | Jul 12, 1938 00:00 | US-2123178-A // Amplifier // Bode Hendrik W. // Bell Telephone Labor Inc | ||||
| PDF File 1882753.pdf | 2.04 MB | Shaun Ewing | Oct 18, 1932 00:00 |
|
US-1882753-A // Telephone system // Bowne Langford J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.04 MB | Shaun Ewing | Oct 18, 1932 00:00 | US-1882753-A // Telephone system // Bowne Langford J. // Bell Telephone Labor Inc | ||||
| PDF File 1884675.pdf | 2.04 MB | Shaun Ewing | Oct 25, 1932 00:00 |
|
US-1884675-A // Electric wave transmission system // Heising Raymond A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.04 MB | Shaun Ewing | Oct 25, 1932 00:00 | US-1884675-A // Electric wave transmission system // Heising Raymond A. // Bell Telephone Labor Inc | ||||
| PDF File 2123228.pdf | 2.04 MB | Shaun Ewing | Jul 12, 1938 00:00 |
|
US-2123228-A // Selector switch // Carpenter Warren W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.04 MB | Shaun Ewing | Jul 12, 1938 00:00 | US-2123228-A // Selector switch // Carpenter Warren W. // Bell Telephone Labor Inc | ||||
| PDF File 1804150.pdf | 2.03 MB | Shaun Ewing | May 05, 1931 00:00 |
|
US-1804150-A // Telephone exchange system // Collis Raymond E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.03 MB | Shaun Ewing | May 05, 1931 00:00 | US-1804150-A // Telephone exchange system // Collis Raymond E. // Bell Telephone Labor Inc | ||||
| PDF File 2112515.pdf | 2.03 MB | Shaun Ewing | Mar 29, 1938 00:00 |
|
US-2112515-A // Two-way signaling system // Bjornson Bjorn G. ; Bryant New Ton W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.03 MB | Shaun Ewing | Mar 29, 1938 00:00 | US-2112515-A // Two-way signaling system // Bjornson Bjorn G. ; Bryant New Ton W. // Bell Telephone Labor Inc |
