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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2199558.pdf | 600 kB | Shaun Ewing | May 07, 1940 00:00 |
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US-2199558-A // Ground potential compensator // Cummings George C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 600 kB | Shaun Ewing | May 07, 1940 00:00 | US-2199558-A // Ground potential compensator // Cummings George C. // Bell Telephone Labor Inc | ||||
| PDF File 2199433.pdf | 612 kB | Shaun Ewing | May 07, 1940 00:00 |
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US-2199433-A // Optical scanning apparatus using mirror helix // Ives Herbert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 612 kB | Shaun Ewing | May 07, 1940 00:00 | US-2199433-A // Optical scanning apparatus using mirror helix // Ives Herbert E. // Bell Telephone Labor Inc | ||||
| PDF File 2199431.pdf | 402 kB | Shaun Ewing | May 07, 1940 00:00 |
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US-2199431-A // Telephone signaling system // Holden William H. T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 402 kB | Shaun Ewing | May 07, 1940 00:00 | US-2199431-A // Telephone signaling system // Holden William H. T. // Bell Telephone Labor Inc | ||||
| PDF File 2199221.pdf | 520 kB | Shaun Ewing | Apr 30, 1940 00:00 |
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US-2199221-A // Wave filter // Gilman George William // Bell Telephone Labor Inc | |||
| Version 1 (current) | 520 kB | Shaun Ewing | Apr 30, 1940 00:00 | US-2199221-A // Wave filter // Gilman George William // Bell Telephone Labor Inc | ||||
| PDF File 2199219.pdf | 1.17 MB | Shaun Ewing | Apr 30, 1940 00:00 |
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US-2199219-A // Terminal block // Edwards William H. ; Porter George C. ; Terry Roy V. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.17 MB | Shaun Ewing | Apr 30, 1940 00:00 | US-2199219-A // Terminal block // Edwards William H. ; Porter George C. ; Terry Roy V. // Bell Telephone Labor Inc | ||||
| PDF File 2199083.pdf | 668 kB | Shaun Ewing | Apr 30, 1940 00:00 |
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US-2199083-A // Transmission of guided waves // Schelkunoff Sergei Alexander // Bell Telephone Labor Inc | |||
| Version 1 (current) | 668 kB | Shaun Ewing | Apr 30, 1940 00:00 | US-2199083-A // Transmission of guided waves // Schelkunoff Sergei Alexander // Bell Telephone Labor Inc | ||||
| PDF File 2199080.pdf | 191 kB | Shaun Ewing | Apr 30, 1940 00:00 |
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US-2199080-A // Gain control system // Norman Nathaniel C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 191 kB | Shaun Ewing | Apr 30, 1940 00:00 | US-2199080-A // Gain control system // Norman Nathaniel C. // Bell Telephone Labor Inc | ||||
| PDF File 2198684.pdf | 1.20 MB | Shaun Ewing | Apr 30, 1940 00:00 |
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US-2198684-A // Wave filter // Sykes Roger A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Apr 30, 1940 00:00 | US-2198684-A // Wave filter // Sykes Roger A. // Bell Telephone Labor Inc | ||||
| PDF File 2198513.pdf | 264 kB | Shaun Ewing | Apr 23, 1940 00:00 |
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US-2198513-A // Lamp // Knoop William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 264 kB | Shaun Ewing | Apr 23, 1940 00:00 | US-2198513-A // Lamp // Knoop William A. // Bell Telephone Labor Inc | ||||
| PDF File 2198326.pdf | 1.89 MB | Shaun Ewing | Apr 23, 1940 00:00 |
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US-2198326-A // Program switching system // Bachelet Albert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.89 MB | Shaun Ewing | Apr 23, 1940 00:00 | US-2198326-A // Program switching system // Bachelet Albert E. // Bell Telephone Labor Inc | ||||
| PDF File 2197868.pdf | 484 kB | Shaun Ewing | Apr 23, 1940 00:00 |
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US-2197868-A // High or low voltage indicating system // Knowlton Clarence S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 484 kB | Shaun Ewing | Apr 23, 1940 00:00 | US-2197868-A // High or low voltage indicating system // Knowlton Clarence S. // Bell Telephone Labor Inc | ||||
| PDF File 2197844.pdf | 400 kB | Shaun Ewing | Apr 23, 1940 00:00 |
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US-2197844-A // Telephone substation apparatus // Walker Albert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 400 kB | Shaun Ewing | Apr 23, 1940 00:00 | US-2197844-A // Telephone substation apparatus // Walker Albert C. // Bell Telephone Labor Inc | ||||
| PDF File 2197513.pdf | 393 kB | Shaun Ewing | Apr 16, 1940 00:00 |
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US-2197513-A // Loading apparatus case // Bardsley Joseph R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 393 kB | Shaun Ewing | Apr 16, 1940 00:00 | US-2197513-A // Loading apparatus case // Bardsley Joseph R. // Bell Telephone Labor Inc | ||||
| PDF File 2197501.pdf | 1.23 MB | Shaun Ewing | Apr 16, 1940 00:00 |
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US-2197501-A // Control circuit for high speed selector // Holden William H. T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.23 MB | Shaun Ewing | Apr 16, 1940 00:00 | US-2197501-A // Control circuit for high speed selector // Holden William H. T. // Bell Telephone Labor Inc | ||||
| PDF File 2197123.pdf | 666 kB | Shaun Ewing | Apr 16, 1940 00:00 |
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US-2197123-A // Guided wave transmission // King Archie P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 666 kB | Shaun Ewing | Apr 16, 1940 00:00 | US-2197123-A // Guided wave transmission // King Archie P. // Bell Telephone Labor Inc | ||||
| PDF File 2197122.pdf | 771 kB | Shaun Ewing | Apr 16, 1940 00:00 |
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US-2197122-A // Guided wave transmission // Bowen Arnold E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 771 kB | Shaun Ewing | Apr 16, 1940 00:00 | US-2197122-A // Guided wave transmission // Bowen Arnold E. // Bell Telephone Labor Inc | ||||
| PDF File 2197042.pdf | 865 kB | Shaun Ewing | Apr 16, 1940 00:00 |
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US-2197042-A // Electron discharge device // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 865 kB | Shaun Ewing | Apr 16, 1940 00:00 | US-2197042-A // Electron discharge device // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2197041.pdf | 733 kB | Shaun Ewing | Apr 16, 1940 00:00 |
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US-2197041-A // Electron discharge device // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 733 kB | Shaun Ewing | Apr 16, 1940 00:00 | US-2197041-A // Electron discharge device // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2196867.pdf | 1.79 MB | Shaun Ewing | Apr 09, 1940 00:00 |
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US-2196867-A // Television image producing system // Knoop William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.79 MB | Shaun Ewing | Apr 09, 1940 00:00 | US-2196867-A // Television image producing system // Knoop William A. // Bell Telephone Labor Inc | ||||
| PDF File 2196844.pdf | 783 kB | Shaun Ewing | Apr 09, 1940 00:00 |
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US-2196844-A // Wave amplifying system // West Julian M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 783 kB | Shaun Ewing | Apr 09, 1940 00:00 | US-2196844-A // Wave amplifying system // West Julian M. // Bell Telephone Labor Inc |
