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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1778319.pdf | 1.32 MB | Shaun Ewing | Oct 14, 1930 00:00 |
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US-1778319-A // Telephone metering system // Hague Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.32 MB | Shaun Ewing | Oct 14, 1930 00:00 | US-1778319-A // Telephone metering system // Hague Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 1690234.pdf | 1.28 MB | Shaun Ewing | Nov 06, 1928 00:00 |
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US-1690234-A // Trunking circuit to centralized operator's position // Lamberty Frederick R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.28 MB | Shaun Ewing | Nov 06, 1928 00:00 | US-1690234-A // Trunking circuit to centralized operator's position // Lamberty Frederick R. // Bell Telephone Labor Inc | ||||
| PDF File 1785062.pdf | 1.25 MB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1785062-A // Transformer system // Whittle Horace // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.25 MB | Shaun Ewing | Dec 16, 1930 00:00 | US-1785062-A // Transformer system // Whittle Horace // Bell Telephone Labor Inc | ||||
| PDF File 1696267.pdf | 1.25 MB | Shaun Ewing | Dec 25, 1928 00:00 |
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US-1696267-A // Telephone system // Dunham Bert G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.25 MB | Shaun Ewing | Dec 25, 1928 00:00 | US-1696267-A // Telephone system // Dunham Bert G. // Bell Telephone Labor Inc | ||||
| PDF File 1753334.pdf | 1.24 MB | Shaun Ewing | Apr 08, 1930 00:00 |
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US-1753334-A // Telephone system // Curley Thomas V. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.24 MB | Shaun Ewing | Apr 08, 1930 00:00 | US-1753334-A // Telephone system // Curley Thomas V. // Bell Telephone Labor Inc | ||||
| PDF File 1757708.pdf | 1.20 MB | Shaun Ewing | May 06, 1930 00:00 |
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US-1757708-A // Telephone-exchange system // Everett Samuel H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | May 06, 1930 00:00 | US-1757708-A // Telephone-exchange system // Everett Samuel H. // Bell Telephone Labor Inc | ||||
| PDF File 1639135.pdf | 1.20 MB | Shaun Ewing | Aug 16, 1927 00:00 |
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US-1639135-A // Telephone system // Johnson Herbert B. ; Eagon Lloyd La Fayette // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Aug 16, 1927 00:00 | US-1639135-A // Telephone system // Johnson Herbert B. ; Eagon Lloyd La Fayette // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 1762986.pdf | 1.19 MB | Shaun Ewing | Jun 10, 1930 00:00 |
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US-1762986-A // Telephone system // Hinrichsen Edward E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Jun 10, 1930 00:00 | US-1762986-A // Telephone system // Hinrichsen Edward E. // Bell Telephone Labor Inc | ||||
| PDF File 1781469.pdf | 1.18 MB | Shaun Ewing | Nov 11, 1930 00:00 |
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US-1781469-A // Wave filter // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.18 MB | Shaun Ewing | Nov 11, 1930 00:00 | US-1781469-A // Wave filter // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 1769918.pdf | 1.15 MB | Shaun Ewing | Jul 08, 1930 00:00 |
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US-1769918-A // Electrooptical transmission system // Gray Frank ; Hefele John R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.15 MB | Shaun Ewing | Jul 08, 1930 00:00 | US-1769918-A // Electrooptical transmission system // Gray Frank ; Hefele John R. // Bell Telephone Labor Inc | ||||
| PDF File 1724905.pdf | 1.15 MB | Shaun Ewing | Aug 20, 1929 00:00 |
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US-1724905-A // Telephone system // Caverly Harry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.15 MB | Shaun Ewing | Aug 20, 1929 00:00 | US-1724905-A // Telephone system // Caverly Harry C. // Bell Telephone Labor Inc | ||||
| PDF File 1719485.pdf | 1.14 MB | Shaun Ewing | Jul 02, 1929 00:00 |
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US-1719485-A // Power-line carrier wave signaling system // Pease Reginald M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.14 MB | Shaun Ewing | Jul 02, 1929 00:00 | US-1719485-A // Power-line carrier wave signaling system // Pease Reginald M. // Bell Telephone Labor Inc | ||||
| PDF File 1681520.pdf | 1.14 MB | Shaun Ewing | Aug 21, 1928 00:00 |
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US-1681520-A // Trunk circuits // Dahl Jack F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.14 MB | Shaun Ewing | Aug 21, 1928 00:00 | US-1681520-A // Trunk circuits // Dahl Jack F. // Bell Telephone Labor Inc | ||||
| PDF File 1762953.pdf | 1.11 MB | Shaun Ewing | Jun 10, 1930 00:00 |
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US-1762953-A // Signaling system // Black Harold S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.11 MB | Shaun Ewing | Jun 10, 1930 00:00 | US-1762953-A // Signaling system // Black Harold S. // Bell Telephone Labor Inc | ||||
| PDF File 1766473.pdf | 1.06 MB | Shaun Ewing | Jun 24, 1930 00:00 |
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US-1766473-A // Electrodynamic device // Wente Edward C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.06 MB | Shaun Ewing | Jun 24, 1930 00:00 | US-1766473-A // Electrodynamic device // Wente Edward C. // Bell Telephone Labor Inc | ||||
| PDF File 1733553.pdf | 1.06 MB | Shaun Ewing | Oct 29, 1929 00:00 |
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US-1733553-A // Power-line carrier-current system // Nebel Charles N. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.06 MB | Shaun Ewing | Oct 29, 1929 00:00 | US-1733553-A // Power-line carrier-current system // Nebel Charles N. // Bell Telephone Labor Inc | ||||
| PDF File 1747224.pdf | 1.05 MB | Shaun Ewing | Feb 18, 1930 00:00 |
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US-1747224-A // Telephone-exchange system // Carpenter Warren W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Feb 18, 1930 00:00 | US-1747224-A // Telephone-exchange system // Carpenter Warren W. // Bell Telephone Labor Inc | ||||
| PDF File 1722064.pdf | 1.05 MB | Shaun Ewing | Jul 23, 1929 00:00 |
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US-1722064-A // Telephone-exchange system // Stearn Franklin A. ; Clark Edgar H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Jul 23, 1929 00:00 | US-1722064-A // Telephone-exchange system // Stearn Franklin A. ; Clark Edgar H. // Bell Telephone Labor Inc | ||||
| PDF File 1667845.pdf | 1.05 MB | Shaun Ewing | May 01, 1928 00:00 |
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US-1667845-A // Telephone system // Fowler Clarence B. ; Lucek Charles W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | May 01, 1928 00:00 | US-1667845-A // Telephone system // Fowler Clarence B. ; Lucek Charles W. // Bell Telephone Labor Inc | ||||
| PDF File 1690210.pdf | 1.04 MB | Shaun Ewing | Nov 06, 1928 00:00 |
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US-1690210-A // Telephone system // Stokely Ray L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.04 MB | Shaun Ewing | Nov 06, 1928 00:00 | US-1690210-A // Telephone system // Stokely Ray L. // Bell Telephone Labor Inc |
