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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1799651.pdf | 389 kB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799651-A // Electrical switching apparatus // Siegmund Humphreys O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 389 kB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799651-A // Electrical switching apparatus // Siegmund Humphreys O. // Bell Telephone Labor Inc | ||||
| PDF File 1799653.pdf | 1.46 MB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799653-A // Telephone system // Stokely Ray L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.46 MB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799653-A // Telephone system // Stokely Ray L. // Bell Telephone Labor Inc | ||||
| PDF File 1799654.pdf | 2.33 MB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799654-A // Telephone-exchange system // Stokely Ray L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.33 MB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799654-A // Telephone-exchange system // Stokely Ray L. // Bell Telephone Labor Inc | ||||
| PDF File 1799679.pdf | 785 kB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799679-A // Telephone-exchange system // Dunham Bert G. ; Fairbairn Rhys A. // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 785 kB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799679-A // Telephone-exchange system // Dunham Bert G. ; Fairbairn Rhys A. // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 1799686.pdf | 529 kB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799686-A // Impulse transmitter // Goff Harold W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 529 kB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799686-A // Impulse transmitter // Goff Harold W. // Bell Telephone Labor Inc | ||||
| PDF File 1799794.pdf | 583 kB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799794-A // Artificial line // Jr. Arthur W. Horton, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 583 kB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799794-A // Artificial line // Jr. Arthur W. Horton, // Bell Telephone Labor Inc | ||||
| PDF File 1799795.pdf | 672 kB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799795-A // Sound recording and reproducing // Horton Joseph W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 672 kB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799795-A // Sound recording and reproducing // Horton Joseph W. // Bell Telephone Labor Inc | ||||
| PDF File 1799796.pdf | 1.25 MB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799796-A // Telephone-exchange system // Hovland Henry // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.25 MB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799796-A // Telephone-exchange system // Hovland Henry // Bell Telephone Labor Inc | ||||
| PDF File 1799799.pdf | 262 kB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799799-A // Sound reproducer // Jones Warren C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 262 kB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799799-A // Sound reproducer // Jones Warren C. // Bell Telephone Labor Inc | ||||
| PDF File 1799800.pdf | 228 kB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799800-A // Adjustable inductance coil // Lane Clarence E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 228 kB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799800-A // Adjustable inductance coil // Lane Clarence E. // Bell Telephone Labor Inc | ||||
| PDF File 1799810.pdf | 1.10 MB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799810-A // Transmission circuits // Fry Thornton C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.10 MB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799810-A // Transmission circuits // Fry Thornton C. // Bell Telephone Labor Inc | ||||
| PDF File 1799811.pdf | 626 kB | Shaun Ewing | Apr 07, 1931 00:00 |
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US-1799811-A // Signaling system // Gooderham John W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 626 kB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799811-A // Signaling system // Gooderham John W. // Bell Telephone Labor Inc | ||||
| PDF File 1800372.pdf | 384 kB | Shaun Ewing | Apr 14, 1931 00:00 |
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US-1800372-A // Frequency-translating circuit // Black Harold S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 384 kB | Shaun Ewing | Apr 14, 1931 00:00 | US-1800372-A // Frequency-translating circuit // Black Harold S. // Bell Telephone Labor Inc | ||||
| PDF File 1800394.pdf | 564 kB | Shaun Ewing | Apr 14, 1931 00:00 |
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US-1800394-A // Regulating device // Lunsford Robert L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 564 kB | Shaun Ewing | Apr 14, 1931 00:00 | US-1800394-A // Regulating device // Lunsford Robert L. // Bell Telephone Labor Inc | ||||
| PDF File 1802118.pdf | 427 kB | Shaun Ewing | Apr 21, 1931 00:00 |
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US-1802118-A // Modulator and system of modulation // Llewellyn Frederick B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 427 kB | Shaun Ewing | Apr 21, 1931 00:00 | US-1802118-A // Modulator and system of modulation // Llewellyn Frederick B. // Bell Telephone Labor Inc | ||||
| PDF File 1802605.pdf | 850 kB | Shaun Ewing | Apr 28, 1931 00:00 |
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US-1802605-A // Method and machine for insulating cables // Kemp Archie R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 850 kB | Shaun Ewing | Apr 28, 1931 00:00 | US-1802605-A // Method and machine for insulating cables // Kemp Archie R. // Bell Telephone Labor Inc | ||||
| PDF File 1803700.pdf | 453 kB | Shaun Ewing | May 05, 1931 00:00 |
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US-1803700-A // Electrooptical system // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 453 kB | Shaun Ewing | May 05, 1931 00:00 | US-1803700-A // Electrooptical system // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 1804087.pdf | 569 kB | Shaun Ewing | May 05, 1931 00:00 |
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US-1804087-A // Wave amplifying system // Bruce Edmond ; Friis Harald T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 569 kB | Shaun Ewing | May 05, 1931 00:00 | US-1804087-A // Wave amplifying system // Bruce Edmond ; Friis Harald T. // Bell Telephone Labor Inc | ||||
| PDF File 1804126.pdf | 707 kB | Shaun Ewing | May 05, 1931 00:00 |
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US-1804126-A // Regulator system // Stoller Hugh M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 707 kB | Shaun Ewing | May 05, 1931 00:00 | US-1804126-A // Regulator system // Stoller Hugh M. // Bell Telephone Labor Inc | ||||
| PDF File 1804127.pdf | 395 kB | Shaun Ewing | May 05, 1931 00:00 |
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US-1804127-A // Speech transmission system // Stryker Norman R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 395 kB | Shaun Ewing | May 05, 1931 00:00 | US-1804127-A // Speech transmission system // Stryker Norman R. // Bell Telephone Labor Inc |
