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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1780937.pdf | 876 kB | Shaun Ewing | Nov 11, 1930 00:00 |
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US-1780937-A // Testing system // O'Neill Henry W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 876 kB | Shaun Ewing | Nov 11, 1930 00:00 | US-1780937-A // Testing system // O'Neill Henry W. // Bell Telephone Labor Inc | ||||
| PDF File 1781351.pdf | 385 kB | Shaun Ewing | Nov 11, 1930 00:00 |
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US-1781351-A // Vibratory system // Thuras Albert L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 385 kB | Shaun Ewing | Nov 11, 1930 00:00 | US-1781351-A // Vibratory system // Thuras Albert L. // Bell Telephone Labor Inc | ||||
| PDF File 1781363.pdf | 715 kB | Shaun Ewing | Nov 11, 1930 00:00 |
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US-1781363-A // Electrical testing system // Bruce Edmond // Bell Telephone Labor Inc | |||
| Version 1 (current) | 715 kB | Shaun Ewing | Nov 11, 1930 00:00 | US-1781363-A // Electrical testing system // Bruce Edmond // Bell Telephone Labor Inc | ||||
| PDF File 1781385.pdf | 1.02 MB | Shaun Ewing | Nov 11, 1930 00:00 |
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US-1781385-A // Telephone-exchange system // Hague Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.02 MB | Shaun Ewing | Nov 11, 1930 00:00 | US-1781385-A // Telephone-exchange system // Hague Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 1781387.pdf | 365 kB | Shaun Ewing | Nov 11, 1930 00:00 |
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US-1781387-A // Diaphragm // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 365 kB | Shaun Ewing | Nov 11, 1930 00:00 | US-1781387-A // Diaphragm // Harrison Henry C. // 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 1782912.pdf | 786 kB | Shaun Ewing | Nov 25, 1930 00:00 |
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US-1782912-A // Method for eliminating noise in machinery // Snook Homer C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 786 kB | Shaun Ewing | Nov 25, 1930 00:00 | US-1782912-A // Method for eliminating noise in machinery // Snook Homer C. // Bell Telephone Labor Inc | ||||
| PDF File 1784825.pdf | 460 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784825-A // Speech transmission // Dudley Homer W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 460 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784825-A // Speech transmission // Dudley Homer W. // Bell Telephone Labor Inc | ||||
| PDF File 1784827.pdf | 204 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784827-A // Magnetic material // Elmen Gustaf W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 204 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784827-A // Magnetic material // Elmen Gustaf W. // Bell Telephone Labor Inc | ||||
| PDF File 1784830.pdf | 474 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784830-A // Mechanical impedance device // Flanders Paul B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 474 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784830-A // Mechanical impedance device // Flanders Paul B. // Bell Telephone Labor Inc | ||||
| PDF File 1784839.pdf | 195 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784839-A // Sound-reproducing system // Keller Arthur C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 195 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784839-A // Sound-reproducing system // Keller Arthur C. // Bell Telephone Labor Inc | ||||
| PDF File 1784844.pdf | 225 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784844-A // Constant frequency wave source // Marrison Warren A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 225 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784844-A // Constant frequency wave source // Marrison Warren A. // Bell Telephone Labor Inc | ||||
| PDF File 1784845.pdf | 147 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784845-A // Phonograph needle // Morrison Louis A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 147 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784845-A // Phonograph needle // Morrison Louis A. // Bell Telephone Labor Inc | ||||
| PDF File 1784858.pdf | 249 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784858-A // Sound-recording system // Wente Edward C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 249 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784858-A // Sound-recording system // Wente Edward C. // Bell Telephone Labor Inc | ||||
| PDF File 1784860.pdf | 271 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784860-A // Sound recorder // Wiebusch Charles F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 271 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784860-A // Sound recorder // Wiebusch Charles F. // Bell Telephone Labor Inc | ||||
| PDF File 1784874.pdf | 883 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784874-A // Control of wave transmission // Hubbard Frank A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 883 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784874-A // Control of wave transmission // Hubbard Frank A. // Bell Telephone Labor Inc | ||||
| PDF File 1784879.pdf | 937 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784879-A // Magnetic modulator circuit // Peterson Eugene // Bell Telephone Labor Inc | |||
| Version 1 (current) | 937 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784879-A // Magnetic modulator circuit // Peterson Eugene // Bell Telephone Labor Inc | ||||
| PDF File 1784978.pdf | 458 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784978-A // Testing apparatus // Taylor Hugh S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 458 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784978-A // Testing apparatus // Taylor Hugh S. // Bell Telephone Labor Inc | ||||
| PDF File 1785036.pdf | 181 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1785036-A // Oscillation generator // Marrison Warren A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 181 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1785036-A // Oscillation generator // Marrison Warren A. // Bell Telephone Labor Inc | ||||
| PDF File 1785060.pdf | 181 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1785060-A // Metallurgical process // White John H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 181 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1785060-A // Metallurgical process // White John H. // Bell Telephone Labor Inc |
