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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1844147.pdf | 4.15 MB | Shaun Ewing | Feb 09, 1932 00:00 |
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US-1844147-A // Automatic and semiautomatic telephone system // Clark Edgar H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.15 MB | Shaun Ewing | Feb 09, 1932 00:00 | US-1844147-A // Automatic and semiautomatic telephone system // Clark Edgar H. // Bell Telephone Labor Inc | ||||
| PDF File 1844422.pdf | 2.34 MB | Shaun Ewing | Feb 09, 1932 00:00 |
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US-1844422-A // Cable telephony // Mathes Robert C. ; Jr. Arthur W. Horton, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.34 MB | Shaun Ewing | Feb 09, 1932 00:00 | US-1844422-A // Cable telephony // Mathes Robert C. ; Jr. Arthur W. Horton, // Bell Telephone Labor Inc | ||||
| PDF File 1844423.pdf | 991 kB | Shaun Ewing | Feb 09, 1932 00:00 |
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US-1844423-A // Attenuation and volume control // Mathes Robert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 991 kB | Shaun Ewing | Feb 09, 1932 00:00 | US-1844423-A // Attenuation and volume control // Mathes Robert C. // Bell Telephone Labor Inc | ||||
| PDF File 1844424.pdf | 607 kB | Shaun Ewing | Feb 09, 1932 00:00 |
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US-1844424-A // Long distance telephone transmission // Jr. Arthur W. Horton, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 607 kB | Shaun Ewing | Feb 09, 1932 00:00 | US-1844424-A // Long distance telephone transmission // Jr. Arthur W. Horton, // Bell Telephone Labor Inc | ||||
| PDF File 1844973.pdf | 640 kB | Shaun Ewing | Feb 16, 1932 00:00 |
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US-1844973-A // Radio communication system // Ports Earl G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 640 kB | Shaun Ewing | Feb 16, 1932 00:00 | US-1844973-A // Radio communication system // Ports Earl G. // Bell Telephone Labor Inc | ||||
| PDF File 1845033.pdf | 364 kB | Shaun Ewing | Feb 16, 1932 00:00 |
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US-1845033-A // Switching mechanism // Bausch Ewald // Bell Telephone Labor Inc | |||
| Version 1 (current) | 364 kB | Shaun Ewing | Feb 16, 1932 00:00 | US-1845033-A // Switching mechanism // Bausch Ewald // Bell Telephone Labor Inc | ||||
| PDF File 1845041.pdf | 419 kB | Shaun Ewing | Feb 16, 1932 00:00 |
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US-1845041-A // Insulated electric conductor // Boving Henrik // Bell Telephone Labor Inc | |||
| Version 1 (current) | 419 kB | Shaun Ewing | Feb 16, 1932 00:00 | US-1845041-A // Insulated electric conductor // Boving Henrik // Bell Telephone Labor Inc | ||||
| PDF File 1845042.pdf | 400 kB | Shaun Ewing | Feb 16, 1932 00:00 |
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US-1845042-A // Electron discharge device // Burns Robert M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 400 kB | Shaun Ewing | Feb 16, 1932 00:00 | US-1845042-A // Electron discharge device // Burns Robert M. // Bell Telephone Labor Inc | ||||
| PDF File 1845075.pdf | 247 kB | Shaun Ewing | Feb 16, 1932 00:00 |
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US-1845075-A // Insulation for electrical conductors // Boving Henrik // Bell Telephone Labor Inc | |||
| Version 1 (current) | 247 kB | Shaun Ewing | Feb 16, 1932 00:00 | US-1845075-A // Insulation for electrical conductors // Boving Henrik // Bell Telephone Labor Inc | ||||
| PDF File 1845077.pdf | 408 kB | Shaun Ewing | Feb 16, 1932 00:00 |
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US-1845077-A // Drawing tool // Dixon John B. ; Hayford Walter S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 408 kB | Shaun Ewing | Feb 16, 1932 00:00 | US-1845077-A // Drawing tool // Dixon John B. ; Hayford Walter S. // Bell Telephone Labor Inc | ||||
| PDF File 1845080.pdf | 479 kB | Shaun Ewing | Feb 16, 1932 00:00 |
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US-1845080-A // Studio for acoustic purposes // Eyring Carl F. ; Hanson Robert L. ; Macnair Walter A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 479 kB | Shaun Ewing | Feb 16, 1932 00:00 | US-1845080-A // Studio for acoustic purposes // Eyring Carl F. ; Hanson Robert L. ; Macnair Walter A. // Bell Telephone Labor Inc | ||||
| PDF File 1846883.pdf | 670 kB | Shaun Ewing | Feb 23, 1932 00:00 |
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US-1846883-A // Synchronous signaling system // Locke George A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 670 kB | Shaun Ewing | Feb 23, 1932 00:00 | US-1846883-A // Synchronous signaling system // Locke George A. // Bell Telephone Labor Inc | ||||
| PDF File 1847086.pdf | 491 kB | Shaun Ewing | Mar 01, 1932 00:00 |
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US-1847086-A // Fluid operated switch // Gargan John O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 491 kB | Shaun Ewing | Mar 01, 1932 00:00 | US-1847086-A // Fluid operated switch // Gargan John O. // Bell Telephone Labor Inc | ||||
| PDF File 1847089.pdf | 383 kB | Shaun Ewing | Mar 01, 1932 00:00 |
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US-1847089-A // Radio receiving system // Heising Raymond A. ; Farrington John F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 383 kB | Shaun Ewing | Mar 01, 1932 00:00 | US-1847089-A // Radio receiving system // Heising Raymond A. ; Farrington John F. // Bell Telephone Labor Inc | ||||
| PDF File 1847113.pdf | 343 kB | Shaun Ewing | Mar 01, 1932 00:00 |
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US-1847113-A // Communication system // Keller Leo // Bell Telephone Labor Inc | |||
| Version 1 (current) | 343 kB | Shaun Ewing | Mar 01, 1932 00:00 | US-1847113-A // Communication system // Keller Leo // Bell Telephone Labor Inc | ||||
| PDF File 1847137.pdf | 341 kB | Shaun Ewing | Mar 01, 1932 00:00 |
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US-1847137-A // Communication system // Roberts John G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 341 kB | Shaun Ewing | Mar 01, 1932 00:00 | US-1847137-A // Communication system // Roberts John G. // Bell Telephone Labor Inc | ||||
| PDF File 1847145.pdf | 331 kB | Shaun Ewing | Mar 01, 1932 00:00 |
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US-1847145-A // Amplifier system // Tarr James E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 331 kB | Shaun Ewing | Mar 01, 1932 00:00 | US-1847145-A // Amplifier system // Tarr James E. // Bell Telephone Labor Inc | ||||
| PDF File 1847174.pdf | 300 kB | Shaun Ewing | Mar 01, 1932 00:00 |
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US-1847174-A // Communication system // Dixon Amos F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 300 kB | Shaun Ewing | Mar 01, 1932 00:00 | US-1847174-A // Communication system // Dixon Amos F. // Bell Telephone Labor Inc | ||||
| PDF File 1847191.pdf | 840 kB | Shaun Ewing | Mar 01, 1932 00:00 |
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US-1847191-A // Control system // Morton Edmund R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 840 kB | Shaun Ewing | Mar 01, 1932 00:00 | US-1847191-A // Control system // Morton Edmund R. // Bell Telephone Labor Inc | ||||
| PDF File 1847213.pdf | 505 kB | Shaun Ewing | Mar 01, 1932 00:00 |
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US-1847213-A // Selector switch // Folkner George W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 505 kB | Shaun Ewing | Mar 01, 1932 00:00 | US-1847213-A // Selector switch // Folkner George W. // Bell Telephone Labor Inc |
