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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2141420.pdf | 279 kB | Shaun Ewing | Dec 27, 1938 00:00 |
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US-2141420-A // Acoustic device // Swickard Andrew E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 279 kB | Shaun Ewing | Dec 27, 1938 00:00 | US-2141420-A // Acoustic device // Swickard Andrew E. // Bell Telephone Labor Inc | ||||
| PDF File 2141746.pdf | 730 kB | Shaun Ewing | Dec 27, 1938 00:00 |
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US-2141746-A // Electro-optical image producing device // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 730 kB | Shaun Ewing | Dec 27, 1938 00:00 | US-2141746-A // Electro-optical image producing device // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2142138.pdf | 794 kB | Shaun Ewing | Jan 03, 1939 00:00 |
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US-2142138-A // Guided wave transmission // Llewellyn Frederick B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 794 kB | Shaun Ewing | Jan 03, 1939 00:00 | US-2142138-A // Guided wave transmission // Llewellyn Frederick B. // Bell Telephone Labor Inc | ||||
| PDF File 2142313.pdf | 529 kB | Shaun Ewing | Jan 03, 1939 00:00 |
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US-2142313-A // Electric oscillator // Heising Raymond A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 529 kB | Shaun Ewing | Jan 03, 1939 00:00 | US-2142313-A // Electric oscillator // Heising Raymond A. // Bell Telephone Labor Inc | ||||
| PDF File 2142316.pdf | 590 kB | Shaun Ewing | Jan 03, 1939 00:00 |
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US-2142316-A // Multiplex multiline carrier system // Huber George H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 590 kB | Shaun Ewing | Jan 03, 1939 00:00 | US-2142316-A // Multiplex multiline carrier system // Huber George H. // Bell Telephone Labor Inc | ||||
| PDF File 2142331.pdf | 594 kB | Shaun Ewing | Jan 03, 1939 00:00 |
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US-2142331-A // Electron emitting cathode // Jr. Charles H. Prescott, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 594 kB | Shaun Ewing | Jan 03, 1939 00:00 | US-2142331-A // Electron emitting cathode // Jr. Charles H. Prescott, // Bell Telephone Labor Inc | ||||
| PDF File 2142335.pdf | 1.01 MB | Shaun Ewing | Jan 03, 1939 00:00 |
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US-2142335-A // Radio transmitter control // Scott Herbert J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | Jan 03, 1939 00:00 | US-2142335-A // Radio transmitter control // Scott Herbert J. // 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 2143056.pdf | 744 kB | Shaun Ewing | Jan 10, 1939 00:00 |
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US-2143056-A // Transmission system // Curtis Austen M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 744 kB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143056-A // Transmission system // Curtis Austen M. // Bell Telephone Labor Inc | ||||
| PDF File 2143163.pdf | 781 kB | Shaun Ewing | Jan 10, 1939 00:00 |
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US-2143163-A // Carrier communication system // Monk Newton // Bell Telephone Labor Inc | |||
| Version 1 (current) | 781 kB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143163-A // Carrier communication system // Monk Newton // Bell Telephone Labor Inc | ||||
| PDF File 2143404.pdf | 276 kB | Shaun Ewing | Jan 10, 1939 00:00 |
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US-2143404-A // Acoustic device // Bryant Herbert W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 276 kB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143404-A // Acoustic device // Bryant Herbert W. // Bell Telephone Labor Inc | ||||
| PDF File 2143407.pdf | 557 kB | Shaun Ewing | Jan 10, 1939 00:00 |
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US-2143407-A // Gain control circuits // Chesnut Roy W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 557 kB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143407-A // Gain control circuits // Chesnut Roy W. // Bell Telephone Labor Inc | ||||
| PDF File 2143414.pdf | 300 kB | Shaun Ewing | Jan 10, 1939 00:00 |
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US-2143414-A // Electrical device // Grisdale Richard O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 300 kB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143414-A // Electrical device // Grisdale Richard O. // Bell Telephone Labor Inc | ||||
| PDF File 2143824.pdf | 140 kB | Shaun Ewing | Jan 10, 1939 00:00 |
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US-2143824-A // Asymmetrical conductor // Smith George O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 140 kB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143824-A // Asymmetrical conductor // Smith George O. // Bell Telephone Labor Inc | ||||
| PDF File 2144839.pdf | 798 kB | Shaun Ewing | Jan 24, 1939 00:00 |
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US-2144839-A // Switch // Forsberg Oscar F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 798 kB | Shaun Ewing | Jan 24, 1939 00:00 | US-2144839-A // Switch // Forsberg Oscar F. // Bell Telephone Labor Inc | ||||
| PDF File 2144843.pdf | 409 kB | Shaun Ewing | Jan 24, 1939 00:00 |
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US-2144843-A // System and method of determining distance // Hearn Richard B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 409 kB | Shaun Ewing | Jan 24, 1939 00:00 | US-2144843-A // System and method of determining distance // Hearn Richard B. // Bell Telephone Labor Inc | ||||
| PDF File 2144844.pdf | 460 kB | Shaun Ewing | Jan 24, 1939 00:00 |
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US-2144844-A // Magnetic telegraphone // Hickman Clarence N. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 460 kB | Shaun Ewing | Jan 24, 1939 00:00 | US-2144844-A // Magnetic telegraphone // Hickman Clarence N. // Bell Telephone Labor Inc | ||||
| PDF File 2144847.pdf | 312 kB | Shaun Ewing | Jan 24, 1939 00:00 |
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US-2144847-A // Impulse producing circuit // Miller Ralph L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 312 kB | Shaun Ewing | Jan 24, 1939 00:00 | US-2144847-A // Impulse producing circuit // Miller Ralph L. // Bell Telephone Labor Inc | ||||
| PDF File 2144851.pdf | 254 kB | Shaun Ewing | Jan 24, 1939 00:00 |
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US-2144851-A // Slitting tool // Pritchard William T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 254 kB | Shaun Ewing | Jan 24, 1939 00:00 | US-2144851-A // Slitting tool // Pritchard William T. // Bell Telephone Labor Inc | ||||
| PDF File 2144865.pdf | 667 kB | Shaun Ewing | Jan 24, 1939 00:00 |
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US-2144865-A // Gain control circuits // Wilson Ira G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 667 kB | Shaun Ewing | Jan 24, 1939 00:00 | US-2144865-A // Gain control circuits // Wilson Ira G. // Bell Telephone Labor Inc |
