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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1829992.pdf | 409 kB | Shaun Ewing | Nov 03, 1931 00:00 |
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US-1829992-A // Rubber composition // Kemp Archie R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 409 kB | Shaun Ewing | Nov 03, 1931 00:00 | US-1829992-A // Rubber composition // Kemp Archie R. // Bell Telephone Labor Inc | ||||
| PDF File 1829806.pdf | 2.36 MB | Shaun Ewing | Nov 03, 1931 00:00 |
|
US-1829806-A // Transmission control // Mathes Robert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.36 MB | Shaun Ewing | Nov 03, 1931 00:00 | US-1829806-A // Transmission control // Mathes Robert C. // Bell Telephone Labor Inc | ||||
| PDF File 1829805.pdf | 2.39 MB | Shaun Ewing | Nov 03, 1931 00:00 |
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US-1829805-A // Transmission control // Mathes Robert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.39 MB | Shaun Ewing | Nov 03, 1931 00:00 | US-1829805-A // Transmission control // Mathes Robert C. // Bell Telephone Labor Inc | ||||
| PDF File 1829803.pdf | 602 kB | Shaun Ewing | Nov 03, 1931 00:00 |
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US-1829803-A // Telephone system // Korn Franklin A. ; Entz Ferdinand S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 602 kB | Shaun Ewing | Nov 03, 1931 00:00 | US-1829803-A // Telephone system // Korn Franklin A. ; Entz Ferdinand S. // Bell Telephone Labor Inc | ||||
| PDF File 1829801.pdf | 194 kB | Shaun Ewing | Nov 03, 1931 00:00 |
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US-1829801-A // Sound reproducing system // Jones Warren C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 194 kB | Shaun Ewing | Nov 03, 1931 00:00 | US-1829801-A // Sound reproducing system // Jones Warren C. // Bell Telephone Labor Inc | ||||
| PDF File 1829783.pdf | 1.63 MB | Shaun Ewing | Nov 03, 1931 00:00 |
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US-1829783-A // Method and system of secret signaling // Chesnut Roy W. ; Fisher Harold J. ; Sanial Arthur J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.63 MB | Shaun Ewing | Nov 03, 1931 00:00 | US-1829783-A // Method and system of secret signaling // Chesnut Roy W. ; Fisher Harold J. ; Sanial Arthur J. // Bell Telephone Labor Inc | ||||
| PDF File 1828507.pdf | 393 kB | Shaun Ewing | Oct 20, 1931 00:00 |
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US-1828507-A // Circuit controlling device // Murphy Paul B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 393 kB | Shaun Ewing | Oct 20, 1931 00:00 | US-1828507-A // Circuit controlling device // Murphy Paul B. // Bell Telephone Labor Inc | ||||
| PDF File 1828503.pdf | 1.10 MB | Shaun Ewing | Oct 20, 1931 00:00 |
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US-1828503-A // Means for reducing interference in electrical circuits // Lutomirski Karel // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.10 MB | Shaun Ewing | Oct 20, 1931 00:00 | US-1828503-A // Means for reducing interference in electrical circuits // Lutomirski Karel // Bell Telephone Labor Inc | ||||
| PDF File 1828498.pdf | 626 kB | Shaun Ewing | Oct 20, 1931 00:00 |
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US-1828498-A // Oscillation circuits // Heising Raymond A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 626 kB | Shaun Ewing | Oct 20, 1931 00:00 | US-1828498-A // Oscillation circuits // Heising Raymond A. // Bell Telephone Labor Inc | ||||
| PDF File 1828455.pdf | 319 kB | Shaun Ewing | Oct 20, 1931 00:00 |
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US-1828455-A // Telephone switchboard // Borgmann Charles // Bell Telephone Labor Inc | |||
| Version 1 (current) | 319 kB | Shaun Ewing | Oct 20, 1931 00:00 | US-1828455-A // Telephone switchboard // Borgmann Charles // Bell Telephone Labor Inc | ||||
| PDF File 1828454.pdf | 1.39 MB | Shaun Ewing | Oct 20, 1931 00:00 |
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US-1828454-A // Transmission network // Bode Hendrik W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.39 MB | Shaun Ewing | Oct 20, 1931 00:00 | US-1828454-A // Transmission network // Bode Hendrik W. // Bell Telephone Labor Inc | ||||
| PDF File 1827297.pdf | 304 kB | Shaun Ewing | Oct 13, 1931 00:00 |
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US-1827297-A // Method of joining wires by means of sleeves // Moore Charles R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 304 kB | Shaun Ewing | Oct 13, 1931 00:00 | US-1827297-A // Method of joining wires by means of sleeves // Moore Charles R. // Bell Telephone Labor Inc | ||||
| PDF File 1827196.pdf | 697 kB | Shaun Ewing | Oct 13, 1931 00:00 |
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US-1827196-A // Piezo electric oscillator // Heising Raymond A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 697 kB | Shaun Ewing | Oct 13, 1931 00:00 | US-1827196-A // Piezo electric oscillator // Heising Raymond A. // Bell Telephone Labor Inc | ||||
| PDF File 1827191.pdf | 431 kB | Shaun Ewing | Oct 13, 1931 00:00 |
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US-1827191-A // Shielded inductance // Casper William L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 431 kB | Shaun Ewing | Oct 13, 1931 00:00 | US-1827191-A // Shielded inductance // Casper William L. // Bell Telephone Labor Inc | ||||
| PDF File 1823739.pdf | 1.23 MB | Shaun Ewing | Sept 15, 1931 00:00 |
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US-1823739-A // System operating on a marginal current basis // Horton Joseph W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.23 MB | Shaun Ewing | Sept 15, 1931 00:00 | US-1823739-A // System operating on a marginal current basis // Horton Joseph W. // Bell Telephone Labor Inc | ||||
| PDF File 1823688.pdf | 1.41 MB | Shaun Ewing | Sept 15, 1931 00:00 |
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US-1823688-A // Telephone exchange system // Hovland Henry // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.41 MB | Shaun Ewing | Sept 15, 1931 00:00 | US-1823688-A // Telephone exchange system // Hovland Henry // Bell Telephone Labor Inc | ||||
| PDF File 1823679.pdf | 2.55 MB | Shaun Ewing | Sept 15, 1931 00:00 |
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US-1823679-A // Call charging telephone exchange system // Busch Aloysius J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.55 MB | Shaun Ewing | Sept 15, 1931 00:00 | US-1823679-A // Call charging telephone exchange system // Busch Aloysius J. // Bell Telephone Labor Inc | ||||
| PDF File 1823678.pdf | 527 kB | Shaun Ewing | Sept 15, 1931 00:00 |
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US-1823678-A // Cabinet for portable testing apparatus // Bowman Herman N. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 527 kB | Shaun Ewing | Sept 15, 1931 00:00 | US-1823678-A // Cabinet for portable testing apparatus // Bowman Herman N. // Bell Telephone Labor Inc | ||||
| PDF File 1823667.pdf | 1.77 MB | Shaun Ewing | Sept 15, 1931 00:00 |
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US-1823667-A // Trunking system // Powell Albert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.77 MB | Shaun Ewing | Sept 15, 1931 00:00 | US-1823667-A // Trunking system // Powell Albert C. // Bell Telephone Labor Inc | ||||
| PDF File 1823664.pdf | 411 kB | Shaun Ewing | Sept 15, 1931 00:00 |
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US-1823664-A // Circuit maker and breaker // Pascarella Anthony J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 411 kB | Shaun Ewing | Sept 15, 1931 00:00 | US-1823664-A // Circuit maker and breaker // Pascarella Anthony J. // Bell Telephone Labor Inc |
