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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1654923.pdf | 326 kB | Shaun Ewing | Jan 03, 1928 00:00 |
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US-1654923-A // Telephone system // Dehn Joseph W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 326 kB | Shaun Ewing | Jan 03, 1928 00:00 | US-1654923-A // Telephone system // Dehn Joseph W. // Bell Telephone Labor Inc | ||||
| PDF File 1654085.pdf | 413 kB | Shaun Ewing | Dec 27, 1927 00:00 |
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US-1654085-A // Voltage-limiting device // Lorance George T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 413 kB | Shaun Ewing | Dec 27, 1927 00:00 | US-1654085-A // Voltage-limiting device // Lorance George T. // Bell Telephone Labor Inc | ||||
| PDF File 1653840.pdf | 201 kB | Shaun Ewing | Dec 27, 1927 00:00 |
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US-1653840-A // Clamping device // Byl George N. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 201 kB | Shaun Ewing | Dec 27, 1927 00:00 | US-1653840-A // Clamping device // Byl George N. // Bell Telephone Labor Inc | ||||
| PDF File 1652491.pdf | 387 kB | Shaun Ewing | Dec 13, 1927 00:00 |
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US-1652491-A // Electromagnetic relay // Miller Daniel D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 387 kB | Shaun Ewing | Dec 13, 1927 00:00 | US-1652491-A // Electromagnetic relay // Miller Daniel D. // Bell Telephone Labor Inc | ||||
| PDF File 1652490.pdf | 266 kB | Shaun Ewing | Dec 13, 1927 00:00 |
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US-1652490-A // Electromagnetic device // Miller Daniel D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 266 kB | Shaun Ewing | Dec 13, 1927 00:00 | US-1652490-A // Electromagnetic device // Miller Daniel D. // Bell Telephone Labor Inc | ||||
| PDF File 1651958.pdf | 273 kB | Shaun Ewing | Dec 06, 1927 00:00 |
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US-1651958-A // Insulation of finely-divided magnetic material // Lowry Homer H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 273 kB | Shaun Ewing | Dec 06, 1927 00:00 | US-1651958-A // Insulation of finely-divided magnetic material // Lowry Homer H. // Bell Telephone Labor Inc | ||||
| PDF File 1651957.pdf | 249 kB | Shaun Ewing | Dec 06, 1927 00:00 |
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US-1651957-A // Insulation of finely-divided magnetic material // Lowry Homer H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 249 kB | Shaun Ewing | Dec 06, 1927 00:00 | US-1651957-A // Insulation of finely-divided magnetic material // Lowry Homer H. // Bell Telephone Labor Inc | ||||
| PDF File 1651021.pdf | 562 kB | Shaun Ewing | Nov 29, 1927 00:00 |
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US-1651021-A // Voltage-limiting device // Field Frank E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 562 kB | Shaun Ewing | Nov 29, 1927 00:00 | US-1651021-A // Voltage-limiting device // Field Frank E. // Bell Telephone Labor Inc | ||||
| PDF File 1651017.pdf | 709 kB | Shaun Ewing | Nov 29, 1927 00:00 |
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US-1651017-A // Party-line revertible ringing system // Deakin Gerald // Bell Telephone Labor Inc | |||
| Version 1 (current) | 709 kB | Shaun Ewing | Nov 29, 1927 00:00 | US-1651017-A // Party-line revertible ringing system // Deakin Gerald // Bell Telephone Labor Inc | ||||
| PDF File 1650683.pdf | 573 kB | Shaun Ewing | Nov 29, 1927 00:00 |
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US-1650683-A // Straightforward trunking system // Bascom Henry M. ; Fowler Clarence B. // American Telephone & Telegraph ; Bell Telephone Labor Inc | |||
| Version 1 (current) | 573 kB | Shaun Ewing | Nov 29, 1927 00:00 | US-1650683-A // Straightforward trunking system // Bascom Henry M. ; Fowler Clarence B. // American Telephone & Telegraph ; Bell Telephone Labor Inc | ||||
| PDF File 1647990.pdf | 485 kB | Shaun Ewing | Nov 08, 1927 00:00 |
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US-1647990-A // Telephone-exchange system // Goodrum Charles L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 485 kB | Shaun Ewing | Nov 08, 1927 00:00 | US-1647990-A // Telephone-exchange system // Goodrum Charles L. // Bell Telephone Labor Inc | ||||
| PDF File 1647738.pdf | 284 kB | Shaun Ewing | Nov 01, 1927 00:00 |
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US-1647738-A // Insulation of magnetic material // Legg Victor E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 284 kB | Shaun Ewing | Nov 01, 1927 00:00 | US-1647738-A // Insulation of magnetic material // Legg Victor E. // Bell Telephone Labor Inc | ||||
| PDF File 1647737.pdf | 327 kB | Shaun Ewing | Nov 01, 1927 00:00 |
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US-1647737-A // Magnetic core // Legg Victor E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 327 kB | Shaun Ewing | Nov 01, 1927 00:00 | US-1647737-A // Magnetic core // Legg Victor E. // Bell Telephone Labor Inc | ||||
| PDF File 1647617.pdf | 231 kB | Shaun Ewing | Nov 01, 1927 00:00 |
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US-1647617-A // Electron-discharge device // Griffith Thomas R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 231 kB | Shaun Ewing | Nov 01, 1927 00:00 | US-1647617-A // Electron-discharge device // Griffith Thomas R. // Bell Telephone Labor Inc | ||||
| PDF File 1647259.pdf | 424 kB | Shaun Ewing | Nov 01, 1927 00:00 |
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US-1647259-A // Adjustable coil // Herbert-Vadersen // Bell Telephone Labor Inc | |||
| Version 1 (current) | 424 kB | Shaun Ewing | Nov 01, 1927 00:00 | US-1647259-A // Adjustable coil // Herbert-Vadersen // Bell Telephone Labor Inc | ||||
| PDF File 1647258.pdf | 685 kB | Shaun Ewing | Nov 01, 1927 00:00 |
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US-1647258-A // Telephone system // Ulrich Horace W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 685 kB | Shaun Ewing | Nov 01, 1927 00:00 | US-1647258-A // Telephone system // Ulrich Horace W. // Bell Telephone Labor Inc | ||||
| PDF File 1647256.pdf | 549 kB | Shaun Ewing | Nov 01, 1927 00:00 |
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US-1647256-A // Selector-switch circuits for step-by-step systems // Stokely Ray L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 549 kB | Shaun Ewing | Nov 01, 1927 00:00 | US-1647256-A // Selector-switch circuits for step-by-step systems // Stokely Ray L. // Bell Telephone Labor Inc | ||||
| PDF File 1647238.pdf | 291 kB | Shaun Ewing | Nov 01, 1927 00:00 |
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US-1647238-A // Electron-discharge device // Manthorne William H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 291 kB | Shaun Ewing | Nov 01, 1927 00:00 | US-1647238-A // Electron-discharge device // Manthorne William H. // Bell Telephone Labor Inc | ||||
| PDF File 1645823.pdf | 367 kB | Shaun Ewing | Oct 18, 1927 00:00 |
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US-1645823-A // Sound-producing device // Shann Oscar A. ; Kuntz Frank A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 367 kB | Shaun Ewing | Oct 18, 1927 00:00 | US-1645823-A // Sound-producing device // Shann Oscar A. ; Kuntz Frank A. // Bell Telephone Labor Inc | ||||
| PDF File 1645778.pdf | 293 kB | Shaun Ewing | Oct 18, 1927 00:00 |
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US-1645778-A // Telephone system // Shiel John B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 293 kB | Shaun Ewing | Oct 18, 1927 00:00 | US-1645778-A // Telephone system // Shiel John B. // Bell Telephone Labor Inc |
