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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1818070.pdf | 517 kB | Shaun Ewing | Aug 11, 1931 00:00 |
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US-1818070-A // Magnetic body // Lathrop Hubbel // Bell Telephone Labor Inc | |||
| Version 1 (current) | 517 kB | Shaun Ewing | Aug 11, 1931 00:00 | US-1818070-A // Magnetic body // Lathrop Hubbel // Bell Telephone Labor Inc | ||||
| PDF File 1818064.pdf | 508 kB | Shaun Ewing | Aug 11, 1931 00:00 |
|
US-1818064-A // Telephone system // Johnson Herbert B. ; Nostitz Erich Von // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 508 kB | Shaun Ewing | Aug 11, 1931 00:00 | US-1818064-A // Telephone system // Johnson Herbert B. ; Nostitz Erich Von // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 1818018.pdf | 472 kB | Shaun Ewing | Aug 11, 1931 00:00 |
|
US-1818018-A // Control circuit // Stocker Closman P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 472 kB | Shaun Ewing | Aug 11, 1931 00:00 | US-1818018-A // Control circuit // Stocker Closman P. // Bell Telephone Labor Inc | ||||
| PDF File 1817024.pdf | 725 kB | Shaun Ewing | Aug 04, 1931 00:00 |
|
US-1817024-A // Retractile device // Voos Frederick A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 725 kB | Shaun Ewing | Aug 04, 1931 00:00 | US-1817024-A // Retractile device // Voos Frederick A. // Bell Telephone Labor Inc | ||||
| PDF File 1816917.pdf | 719 kB | Shaun Ewing | Aug 04, 1931 00:00 |
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US-1816917-A // Apparatus for the measurement of acoustic impedance // Smythe Edwin H. ; Flanders Paul B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 719 kB | Shaun Ewing | Aug 04, 1931 00:00 | US-1816917-A // Apparatus for the measurement of acoustic impedance // Smythe Edwin H. ; Flanders Paul B. // Bell Telephone Labor Inc | ||||
| PDF File 1816913.pdf | 555 kB | Shaun Ewing | Aug 04, 1931 00:00 |
|
US-1816913-A // Protective circuit for vacuum tubes // Schelleng John C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 555 kB | Shaun Ewing | Aug 04, 1931 00:00 | US-1816913-A // Protective circuit for vacuum tubes // Schelleng John C. // Bell Telephone Labor Inc | ||||
| PDF File 1816906.pdf | 571 kB | Shaun Ewing | Aug 04, 1931 00:00 |
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US-1816906-A // Electromagnetic device // Jones Warren C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 571 kB | Shaun Ewing | Aug 04, 1931 00:00 | US-1816906-A // Electromagnetic device // Jones Warren C. // Bell Telephone Labor Inc | ||||
| PDF File 1816905.pdf | 741 kB | Shaun Ewing | Aug 04, 1931 00:00 |
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US-1816905-A // Communication system // Horton Joseph W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 741 kB | Shaun Ewing | Aug 04, 1931 00:00 | US-1816905-A // Communication system // Horton Joseph W. // Bell Telephone Labor Inc | ||||
| PDF File 1816887.pdf | 2.45 MB | Shaun Ewing | Aug 04, 1931 00:00 |
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US-1816887-A // Automatic article selecting and distributing system // Adams Edgar W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.45 MB | Shaun Ewing | Aug 04, 1931 00:00 | US-1816887-A // Automatic article selecting and distributing system // Adams Edgar W. // Bell Telephone Labor Inc | ||||
| PDF File 1816862.pdf | 1007 kB | Shaun Ewing | Aug 04, 1931 00:00 |
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US-1816862-A // Amplifying system // Miller Robert A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1007 kB | Shaun Ewing | Aug 04, 1931 00:00 | US-1816862-A // Amplifying system // Miller Robert A. // Bell Telephone Labor Inc | ||||
| PDF File 1816846.pdf | 283 kB | Shaun Ewing | Aug 04, 1931 00:00 |
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US-1816846-A // Electrical connecter // Harvey William H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 283 kB | Shaun Ewing | Aug 04, 1931 00:00 | US-1816846-A // Electrical connecter // Harvey William H. // Bell Telephone Labor Inc | ||||
| PDF File 1816634.pdf | 3.32 MB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816634-A // Telephone exchange system // Carpenter Warren W. ; Dahl Jack F. ; Davis Richard C. ; Kittredge Linus E. // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 3.32 MB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816634-A // Telephone exchange system // Carpenter Warren W. ; Dahl Jack F. ; Davis Richard C. ; Kittredge Linus E. // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 1816621.pdf | 422 kB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816621-A // Testing system // Stacy Leland J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 422 kB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816621-A // Testing system // Stacy Leland J. // Bell Telephone Labor Inc | ||||
| PDF File 1816613.pdf | 603 kB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816613-A // Telephone system // Powell Albert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 603 kB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816613-A // Telephone system // Powell Albert C. // Bell Telephone Labor Inc | ||||
| PDF File 1816601.pdf | 476 kB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816601-A // Electron discharge device // Mcneill George A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 476 kB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816601-A // Electron discharge device // Mcneill George A. // Bell Telephone Labor Inc | ||||
| PDF File 1816599.pdf | 778 kB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816599-A // Signal transmission system // Mathes Robert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 778 kB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816599-A // Signal transmission system // Mathes Robert C. // Bell Telephone Labor Inc | ||||
| PDF File 1816570.pdf | 2.76 MB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816570-A // Testing system // Draper John B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.76 MB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816570-A // Testing system // Draper John B. // Bell Telephone Labor Inc | ||||
| PDF File 1816558.pdf | 509 kB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816558-A // Electromagnetic device // Zupa Frank A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 509 kB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816558-A // Electromagnetic device // Zupa Frank A. // Bell Telephone Labor Inc | ||||
| PDF File 1815246.pdf | 478 kB | Shaun Ewing | Jul 21, 1931 00:00 |
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US-1815246-A // Radio direction finder // Englund Carl R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 478 kB | Shaun Ewing | Jul 21, 1931 00:00 | US-1815246-A // Radio direction finder // Englund Carl R. // Bell Telephone Labor Inc | ||||
| PDF File 1815212.pdf | 557 kB | Shaun Ewing | Jul 21, 1931 00:00 |
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US-1815212-A // Terminal connecter // Ogg Robert A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 557 kB | Shaun Ewing | Jul 21, 1931 00:00 | US-1815212-A // Terminal connecter // Ogg Robert A. // Bell Telephone Labor Inc |
