Unable to load page tree. It seems that you do not have permission to view the root page.
Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2207940.pdf | 548 kB | Shaun Ewing | Jul 16, 1940 00:00 |
|
US-2207940-A // Biasing potential supply circuit // Norton Frank R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 548 kB | Shaun Ewing | Jul 16, 1940 00:00 | US-2207940-A // Biasing potential supply circuit // Norton Frank R. // Bell Telephone Labor Inc | ||||
| PDF File 2207969.pdf | 970 kB | Shaun Ewing | Jul 16, 1940 00:00 |
|
US-2207969-A // Electrical contact protection // Burton Everett T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 970 kB | Shaun Ewing | Jul 16, 1940 00:00 | US-2207969-A // Electrical contact protection // Burton Everett T. // Bell Telephone Labor Inc | ||||
| PDF File 2207976.pdf | 742 kB | Shaun Ewing | Jul 16, 1940 00:00 |
|
US-2207976-A // Amplifier circuit // Ferrell Enoch B. // Bell Telephone Lab Incorproate | |||
| Version 1 (current) | 742 kB | Shaun Ewing | Jul 16, 1940 00:00 | US-2207976-A // Amplifier circuit // Ferrell Enoch B. // Bell Telephone Lab Incorproate | ||||
| PDF File 2208129.pdf | 779 kB | Shaun Ewing | Jul 16, 1940 00:00 |
|
US-2208129-A // Photoelectric tube // Ingram Sydney B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 779 kB | Shaun Ewing | Jul 16, 1940 00:00 | US-2208129-A // Photoelectric tube // Ingram Sydney B. // Bell Telephone Labor Inc | ||||
| PDF File 2208144.pdf | 435 kB | Shaun Ewing | Jul 16, 1940 00:00 |
|
US-2208144-A // Variable gain feedback amplifier // West Julian M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 435 kB | Shaun Ewing | Jul 16, 1940 00:00 | US-2208144-A // Variable gain feedback amplifier // West Julian M. // Bell Telephone Labor Inc | ||||
| PDF File 2208206.pdf | 465 kB | Shaun Ewing | Jul 16, 1940 00:00 |
|
US-2208206-A // Intelligence transmitting circuit // Jr. Robert Black, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 465 kB | Shaun Ewing | Jul 16, 1940 00:00 | US-2208206-A // Intelligence transmitting circuit // Jr. Robert Black, // Bell Telephone Labor Inc | ||||
| PDF File 2208241.pdf | 635 kB | Shaun Ewing | Jul 16, 1940 00:00 |
|
US-2208241-A // Electrical timing mechanism // Bachelet Albert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 635 kB | Shaun Ewing | Jul 16, 1940 00:00 | US-2208241-A // Electrical timing mechanism // Bachelet Albert E. // Bell Telephone Labor Inc | ||||
| PDF File 2208357.pdf | 1.38 MB | Shaun Ewing | Jul 16, 1940 00:00 |
|
US-2208357-A // Telephone meter control system // Busch Aloysius J. ; Matthies William H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.38 MB | Shaun Ewing | Jul 16, 1940 00:00 | US-2208357-A // Telephone meter control system // Busch Aloysius J. ; Matthies William H. // Bell Telephone Labor Inc | ||||
| PDF File 2208398.pdf | 883 kB | Shaun Ewing | Jul 16, 1940 00:00 |
|
US-2208398-A // Radio receiver // Simons Burton H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 883 kB | Shaun Ewing | Jul 16, 1940 00:00 | US-2208398-A // Radio receiver // Simons Burton H. // Bell Telephone Labor Inc | ||||
| PDF File 2208417.pdf | 636 kB | Shaun Ewing | Jul 16, 1940 00:00 |
|
US-2208417-A // Transmission system // Gilbert John J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 636 kB | Shaun Ewing | Jul 16, 1940 00:00 | US-2208417-A // Transmission system // Gilbert John J. // Bell Telephone Labor Inc | ||||
| PDF File 2208617.pdf | 855 kB | Shaun Ewing | Jul 23, 1940 00:00 |
|
US-2208617-A // Signal transmission system // Wilson Ira G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 855 kB | Shaun Ewing | Jul 23, 1940 00:00 | US-2208617-A // Signal transmission system // Wilson Ira G. // Bell Telephone Labor Inc | ||||
| PDF File 2208661.pdf | 744 kB | Shaun Ewing | Jul 23, 1940 00:00 |
|
US-2208661-A // Purification of gases by fractional condenszation // Christensen Carl J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 744 kB | Shaun Ewing | Jul 23, 1940 00:00 | US-2208661-A // Purification of gases by fractional condenszation // Christensen Carl J. // Bell Telephone Labor Inc | ||||
| PDF File 2208665.pdf | 515 kB | Shaun Ewing | Jul 23, 1940 00:00 |
|
US-2208665-A // Amplifier circuits with controlled gain // Crabtree Theodore H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 515 kB | Shaun Ewing | Jul 23, 1940 00:00 | US-2208665-A // Amplifier circuits with controlled gain // Crabtree Theodore H. // Bell Telephone Labor Inc | ||||
| PDF File 2208752.pdf | 675 kB | Shaun Ewing | Jul 23, 1940 00:00 |
|
US-2208752-A // Volume limiter circuit // Jr. Stephen Doba, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 675 kB | Shaun Ewing | Jul 23, 1940 00:00 | US-2208752-A // Volume limiter circuit // Jr. Stephen Doba, // Bell Telephone Labor Inc | ||||
| PDF File 2208765.pdf | 2.90 MB | Shaun Ewing | Jul 23, 1940 00:00 |
|
US-2208765-A // Telephone system // King Ralph E. ; Miller Ohmer R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.90 MB | Shaun Ewing | Jul 23, 1940 00:00 | US-2208765-A // Telephone system // King Ralph E. ; Miller Ohmer R. // Bell Telephone Labor Inc | ||||
| PDF File 2208923.pdf | 574 kB | Shaun Ewing | Jul 23, 1940 00:00 |
|
US-2208923-A // Volume limiter circuit // Curtis Austen M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 574 kB | Shaun Ewing | Jul 23, 1940 00:00 | US-2208923-A // Volume limiter circuit // Curtis Austen M. // Bell Telephone Labor Inc | ||||
| PDF File 2208924.pdf | 1018 kB | Shaun Ewing | Jul 23, 1940 00:00 |
|
US-2208924-A // Telephone system // Jr. John Davidson, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1018 kB | Shaun Ewing | Jul 23, 1940 00:00 | US-2208924-A // Telephone system // Jr. John Davidson, // Bell Telephone Labor Inc | ||||
| PDF File 2208927.pdf | 935 kB | Shaun Ewing | Jul 23, 1940 00:00 |
|
US-2208927-A // Electro-optical image production // Hefele John R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 935 kB | Shaun Ewing | Jul 23, 1940 00:00 | US-2208927-A // Electro-optical image production // Hefele John R. // Bell Telephone Labor Inc | ||||
| PDF File 2209064.pdf | 693 kB | Shaun Ewing | Jul 23, 1940 00:00 |
|
US-2209064-A // Measurement of phase shift // Nyquist Harry // Bell Telephone Labor Inc | |||
| Version 1 (current) | 693 kB | Shaun Ewing | Jul 23, 1940 00:00 | US-2209064-A // Measurement of phase shift // Nyquist Harry // Bell Telephone Labor Inc | ||||
| PDF File 2209157.pdf | 266 kB | Shaun Ewing | Jul 23, 1940 00:00 |
|
US-2209157-A // Educational apparatus // Glunt Omer M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 266 kB | Shaun Ewing | Jul 23, 1940 00:00 | US-2209157-A // Educational apparatus // Glunt Omer M. // Bell Telephone Labor Inc |
