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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2220143.pdf | 702 kB | Shaun Ewing | Nov 05, 1940 00:00 |
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US-2220143-A // Electromagnetic switching device // Buch Peter E. ; Knowlton Clarence S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 702 kB | Shaun Ewing | Nov 05, 1940 00:00 | US-2220143-A // Electromagnetic switching device // Buch Peter E. ; Knowlton Clarence S. // Bell Telephone Labor Inc | ||||
| PDF File 2220168.pdf | 302 kB | Shaun Ewing | Nov 05, 1940 00:00 |
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US-2220168-A // Coin collection apparatus // Melick John M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 302 kB | Shaun Ewing | Nov 05, 1940 00:00 | US-2220168-A // Coin collection apparatus // Melick John M. // Bell Telephone Labor Inc | ||||
| PDF File 2220883.pdf | 1.22 MB | Shaun Ewing | Nov 12, 1940 00:00 |
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US-2220883-A // Circuit controller // Gerger Uriah S. ; Curtis Austen M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Nov 12, 1940 00:00 | US-2220883-A // Circuit controller // Gerger Uriah S. ; Curtis Austen M. // Bell Telephone Labor Inc | ||||
| PDF File 2220889.pdf | 1.31 MB | Shaun Ewing | Nov 12, 1940 00:00 |
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US-2220889-A // Communication system // Cole Ira E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.31 MB | Shaun Ewing | Nov 12, 1940 00:00 | US-2220889-A // Communication system // Cole Ira E. // Bell Telephone Labor Inc | ||||
| PDF File 2220931.pdf | 9.39 MB | Shaun Ewing | Nov 12, 1940 00:00 |
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US-2220931-A // Telegraph system // Krecek Joseph A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 9.39 MB | Shaun Ewing | Nov 12, 1940 00:00 | US-2220931-A // Telegraph system // Krecek Joseph A. // Bell Telephone Labor Inc | ||||
| PDF File 2220942.pdf | 1.53 MB | Shaun Ewing | Nov 12, 1940 00:00 |
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US-2220942-A // Acoustic device // Morrison Louis A. ; Mott Edward E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.53 MB | Shaun Ewing | Nov 12, 1940 00:00 | US-2220942-A // Acoustic device // Morrison Louis A. ; Mott Edward E. // Bell Telephone Labor Inc | ||||
| PDF File 2221390.pdf | 298 kB | Shaun Ewing | Nov 12, 1940 00:00 |
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US-2221390-A // Apparatus for and a method of making coils // Thompson William J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 298 kB | Shaun Ewing | Nov 12, 1940 00:00 | US-2221390-A // Apparatus for and a method of making coils // Thompson William J. // Bell Telephone Labor Inc | ||||
| PDF File 2221833.pdf | 352 kB | Shaun Ewing | Nov 19, 1940 00:00 |
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US-2221833-A // System for measuring contact rebounding // Cory Samuel I. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Nov 19, 1940 00:00 | US-2221833-A // System for measuring contact rebounding // Cory Samuel I. // Bell Telephone Labor Inc | ||||
| PDF File 2221956.pdf | 374 kB | Shaun Ewing | Nov 19, 1940 00:00 |
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US-2221956-A // Sound recording compositions // Schuh Arthur E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 374 kB | Shaun Ewing | Nov 19, 1940 00:00 | US-2221956-A // Sound recording compositions // Schuh Arthur E. // Bell Telephone Labor Inc | ||||
| PDF File 2222248.pdf | 293 kB | Shaun Ewing | Nov 19, 1940 00:00 |
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US-2222248-A // Ringing system // Blount Frank E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 293 kB | Shaun Ewing | Nov 19, 1940 00:00 | US-2222248-A // Ringing system // Blount Frank E. // Bell Telephone Labor Inc | ||||
| PDF File 2222417.pdf | 772 kB | Shaun Ewing | Nov 19, 1940 00:00 |
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US-2222417-A // Wave filter // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 772 kB | Shaun Ewing | Nov 19, 1940 00:00 | US-2222417-A // Wave filter // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2222425.pdf | 777 kB | Shaun Ewing | Nov 19, 1940 00:00 |
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US-2222425-A // Magnetic structure // Wehe Herman G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 777 kB | Shaun Ewing | Nov 19, 1940 00:00 | US-2222425-A // Magnetic structure // Wehe Herman G. // Bell Telephone Labor Inc | ||||
| PDF File 2222652.pdf | 217 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2222652-A // Method of suspending aerial cables // Carr James A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 217 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2222652-A // Method of suspending aerial cables // Carr James A. // Bell Telephone Labor Inc | ||||
| PDF File 2222672.pdf | 1.66 MB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2222672-A // Communication switching system // Large Wayne V. K. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.66 MB | Shaun Ewing | Nov 26, 1940 00:00 | US-2222672-A // Communication switching system // Large Wayne V. K. // Bell Telephone Labor Inc | ||||
| PDF File 2222688.pdf | 528 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2222688-A // Vibratory frequency controlling device // Rumpel Carl H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 528 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2222688-A // Vibratory frequency controlling device // Rumpel Carl H. // Bell Telephone Labor Inc | ||||
| PDF File 2223049.pdf | 657 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2223049-A // Duplex radio system // Reichle Winfried E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 657 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2223049-A // Duplex radio system // Reichle Winfried E. // Bell Telephone Labor Inc | ||||
| PDF File 2223161.pdf | 731 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2223161-A // Negative feedback amplifier circuit // Anderson Frithiof B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 731 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2223161-A // Negative feedback amplifier circuit // Anderson Frithiof B. // Bell Telephone Labor Inc | ||||
| PDF File 2223167.pdf | 725 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2223167-A // Electric wave amplifier // Dickieson Alton C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 725 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2223167-A // Electric wave amplifier // Dickieson Alton C. // Bell Telephone Labor Inc | ||||
| PDF File 2223200.pdf | 449 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2223200-A // Telephone repeater control circuit // Augustadt Herbert W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 449 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2223200-A // Telephone repeater control circuit // Augustadt Herbert W. // Bell Telephone Labor Inc | ||||
| PDF File 2223224.pdf | 983 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2223224-A // Radio speed and drift indicator // Newhouse Russell C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 983 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2223224-A // Radio speed and drift indicator // Newhouse Russell C. // Bell Telephone Labor Inc |
