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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1897069.pdf | 5.32 MB | Shaun Ewing | Feb 14, 1933 00:00 |
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US-1897069-A // Telephone exchange system // Newsom James B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 5.32 MB | Shaun Ewing | Feb 14, 1933 00:00 | US-1897069-A // Telephone exchange system // Newsom James B. // Bell Telephone Labor Inc | ||||
| PDF File 2106360.pdf | 5.14 MB | Shaun Ewing | Jan 25, 1938 00:00 |
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US-2106360-A // Telephone system // Raymond Ralph // Bell Telephone Labor Inc | |||
| Version 1 (current) | 5.14 MB | Shaun Ewing | Jan 25, 1938 00:00 | US-2106360-A // Telephone system // Raymond Ralph // Bell Telephone Labor Inc | ||||
| PDF File 2214809.pdf | 5.05 MB | Shaun Ewing | Sept 17, 1940 00:00 |
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US-2214809-A // Telephone system // Caverly Harry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 5.05 MB | Shaun Ewing | Sept 17, 1940 00:00 | US-2214809-A // Telephone system // Caverly Harry C. // Bell Telephone Labor Inc | ||||
| PDF File 2020458.pdf | 4.80 MB | Shaun Ewing | Nov 12, 1935 00:00 |
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US-2020458-A // Telephone system // Dahl Jack F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.80 MB | Shaun Ewing | Nov 12, 1935 00:00 | US-2020458-A // Telephone system // Dahl Jack F. // Bell Telephone Labor Inc | ||||
| PDF File 1859924.pdf | 4.66 MB | Shaun Ewing | May 24, 1932 00:00 |
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US-1859924-A // Call charging telephone exchange system // Johnson Lewis H. ; Gibson Earl S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.66 MB | Shaun Ewing | May 24, 1932 00:00 | US-1859924-A // Call charging telephone exchange system // Johnson Lewis H. ; Gibson Earl S. // Bell Telephone Labor Inc | ||||
| PDF File 1917884.pdf | 4.42 MB | Shaun Ewing | Jul 11, 1933 00:00 |
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US-1917884-A // Call charging telephone system // Hague Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.42 MB | Shaun Ewing | Jul 11, 1933 00:00 | US-1917884-A // Call charging telephone system // Hague Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 2105921.pdf | 4.37 MB | Shaun Ewing | Jan 18, 1938 00:00 |
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US-2105921-A // Number checking system // Korn Franklin A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.37 MB | Shaun Ewing | Jan 18, 1938 00:00 | US-2105921-A // Number checking system // Korn Franklin A. // Bell Telephone Labor Inc | ||||
| PDF File 2165925.pdf | 4.31 MB | Shaun Ewing | Jul 11, 1939 00:00 |
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US-2165925-A // Automatic billing system // Goodrum Charles L. ; Hinrichsen Edward E. ; Keller Leo // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.31 MB | Shaun Ewing | Jul 11, 1939 00:00 | US-2165925-A // Automatic billing system // Goodrum Charles L. ; Hinrichsen Edward E. ; Keller Leo // Bell Telephone Labor Inc | ||||
| PDF File 1823040.pdf | 4.28 MB | Shaun Ewing | Sept 15, 1931 00:00 |
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US-1823040-A // Call charging telephone exchange system // Hague Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.28 MB | Shaun Ewing | Sept 15, 1931 00:00 | US-1823040-A // Call charging telephone exchange system // Hague Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 2145079.pdf | 4.21 MB | Shaun Ewing | Jan 24, 1939 00:00 |
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US-2145079-A // Telephone system // Gibson Earl S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.21 MB | Shaun Ewing | Jan 24, 1939 00:00 | US-2145079-A // Telephone system // Gibson Earl S. // Bell Telephone Labor Inc | ||||
| PDF File 1844147.pdf | 4.15 MB | Shaun Ewing | Feb 09, 1932 00:00 |
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US-1844147-A // Automatic and semiautomatic telephone system // Clark Edgar H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.15 MB | Shaun Ewing | Feb 09, 1932 00:00 | US-1844147-A // Automatic and semiautomatic telephone system // Clark Edgar H. // Bell Telephone Labor Inc | ||||
| PDF File 1855616.pdf | 4.08 MB | Shaun Ewing | Apr 26, 1932 00:00 |
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US-1855616-A // Telephone system // Stevens William E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.08 MB | Shaun Ewing | Apr 26, 1932 00:00 | US-1855616-A // Telephone system // Stevens William E. // Bell Telephone Labor Inc | ||||
| PDF File 1823354.pdf | 4.00 MB | Shaun Ewing | Sept 15, 1931 00:00 |
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US-1823354-A // High speed submarine cable telegraph system // Dowd Andrew D. ; Kerr Mark B. ; Locke George A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.00 MB | Shaun Ewing | Sept 15, 1931 00:00 | US-1823354-A // High speed submarine cable telegraph system // Dowd Andrew D. ; Kerr Mark B. ; Locke George A. // Bell Telephone Labor Inc | ||||
| PDF File 1837206.pdf | 3.99 MB | Shaun Ewing | Dec 22, 1931 00:00 |
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US-1837206-A // Call charging telephone exchange system // Collis Raymond E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.99 MB | Shaun Ewing | Dec 22, 1931 00:00 | US-1837206-A // Call charging telephone exchange system // Collis Raymond E. // Bell Telephone Labor Inc | ||||
| PDF File 2143000.pdf | 3.96 MB | Shaun Ewing | Jan 10, 1939 00:00 |
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US-2143000-A // Telegraph system // Cramer Walter W. ; Fitch Karl E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.96 MB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143000-A // Telegraph system // Cramer Walter W. ; Fitch Karl E. // Bell Telephone Labor Inc | ||||
| PDF File 2192025.pdf | 3.95 MB | Shaun Ewing | Feb 27, 1940 00:00 |
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US-2192025-A // Telephone system // Busch Aloysius J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.95 MB | Shaun Ewing | Feb 27, 1940 00:00 | US-2192025-A // Telephone system // Busch Aloysius J. // Bell Telephone Labor Inc | ||||
| PDF File 2098956.pdf | 3.95 MB | Shaun Ewing | Nov 16, 1937 00:00 |
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US-2098956-A // Signaling system // Dudley Homer W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.95 MB | Shaun Ewing | Nov 16, 1937 00:00 | US-2098956-A // Signaling system // Dudley Homer W. // Bell Telephone Labor Inc | ||||
| PDF File 2104449.pdf | 3.93 MB | Shaun Ewing | Jan 04, 1938 00:00 |
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US-2104449-A // Telephone system // Bowne Langford J. ; Beach Howard ; Lamberty Frederick R. // Grace Macdonald Stokely ; Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.93 MB | Shaun Ewing | Jan 04, 1938 00:00 | US-2104449-A // Telephone system // Bowne Langford J. ; Beach Howard ; Lamberty Frederick R. // Grace Macdonald Stokely ; Bell Telephone Labor Inc | ||||
| PDF File 2209955.pdf | 3.91 MB | Shaun Ewing | Aug 06, 1940 00:00 |
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US-2209955-A // Wave translation system // Black Harold S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.91 MB | Shaun Ewing | Aug 06, 1940 00:00 | US-2209955-A // Wave translation system // Black Harold S. // Bell Telephone Labor Inc | ||||
| PDF File 1930255.pdf | 3.81 MB | Shaun Ewing | Oct 10, 1933 00:00 |
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US-1930255-A // Telephone system // Smith Gerard V. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.81 MB | Shaun Ewing | Oct 10, 1933 00:00 | US-1930255-A // Telephone system // Smith Gerard V. // Bell Telephone Labor Inc |
