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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| 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 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 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 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 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 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 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 1816913.pdf | 555 kB | Shaun Ewing | Aug 04, 1931 00:00 |
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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 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 1817024.pdf | 725 kB | Shaun Ewing | Aug 04, 1931 00:00 |
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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 1818018.pdf | 472 kB | Shaun Ewing | Aug 11, 1931 00:00 |
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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 1818064.pdf | 508 kB | Shaun Ewing | Aug 11, 1931 00:00 |
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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 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 1818099.pdf | 151 kB | Shaun Ewing | Aug 11, 1931 00:00 |
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US-1818099-A // Drive ring // Rapelje John A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 151 kB | Shaun Ewing | Aug 11, 1931 00:00 | US-1818099-A // Drive ring // Rapelje John A. // Bell Telephone Labor Inc | ||||
| PDF File 1818156.pdf | 267 kB | Shaun Ewing | Aug 11, 1931 00:00 |
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US-1818156-A // Designation strip // O'Neill Henry W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 267 kB | Shaun Ewing | Aug 11, 1931 00:00 | US-1818156-A // Designation strip // O'Neill Henry W. // Bell Telephone Labor Inc | ||||
| PDF File 1818463.pdf | 1.46 MB | Shaun Ewing | Aug 11, 1931 00:00 |
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US-1818463-A // Zero correcting circuit // Curtis Austen M. ; Burton Everett T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.46 MB | Shaun Ewing | Aug 11, 1931 00:00 | US-1818463-A // Zero correcting circuit // Curtis Austen M. ; Burton Everett T. // Bell Telephone Labor Inc | ||||
| PDF File 1818568.pdf | 391 kB | Shaun Ewing | Aug 11, 1931 00:00 |
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US-1818568-A // Coin collection apparatus // Melick John M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 391 kB | Shaun Ewing | Aug 11, 1931 00:00 | US-1818568-A // Coin collection apparatus // Melick John M. // Bell Telephone Labor Inc | ||||
| PDF File 1819614.pdf | 942 kB | Shaun Ewing | Aug 18, 1931 00:00 |
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US-1819614-A // Wave transmission system // Mathes Robert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 942 kB | Shaun Ewing | Aug 18, 1931 00:00 | US-1819614-A // Wave transmission system // Mathes Robert C. // Bell Telephone Labor Inc | ||||
| PDF File 1819629.pdf | 704 kB | Shaun Ewing | Aug 18, 1931 00:00 |
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US-1819629-A // Vacuum tube circuits // Whiting Donald F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 704 kB | Shaun Ewing | Aug 18, 1931 00:00 | US-1819629-A // Vacuum tube circuits // Whiting Donald F. // Bell Telephone Labor Inc | ||||
| PDF File 1819648.pdf | 1.26 MB | Shaun Ewing | Aug 18, 1931 00:00 |
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US-1819648-A // Wave transmission system // Mathes Robert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.26 MB | Shaun Ewing | Aug 18, 1931 00:00 | US-1819648-A // Wave transmission system // Mathes Robert C. // Bell Telephone Labor Inc |
