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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2208665.pdf | 515 kB | Shaun Ewing | Jul 23, 1940 00:00 |
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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 2208661.pdf | 744 kB | Shaun Ewing | Jul 23, 1940 00:00 |
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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 2208617.pdf | 855 kB | Shaun Ewing | Jul 23, 1940 00:00 |
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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 2208417.pdf | 636 kB | Shaun Ewing | Jul 16, 1940 00:00 |
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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 2208398.pdf | 883 kB | Shaun Ewing | Jul 16, 1940 00:00 |
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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 2208357.pdf | 1.38 MB | Shaun Ewing | Jul 16, 1940 00:00 |
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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 2208241.pdf | 635 kB | Shaun Ewing | Jul 16, 1940 00:00 |
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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 2208206.pdf | 465 kB | Shaun Ewing | Jul 16, 1940 00:00 |
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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 2208144.pdf | 435 kB | Shaun Ewing | Jul 16, 1940 00:00 |
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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 2208129.pdf | 779 kB | Shaun Ewing | Jul 16, 1940 00:00 |
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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 2207976.pdf | 742 kB | Shaun Ewing | Jul 16, 1940 00:00 |
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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 2207969.pdf | 970 kB | Shaun Ewing | Jul 16, 1940 00:00 |
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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 2207940.pdf | 548 kB | Shaun Ewing | Jul 16, 1940 00:00 |
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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 2207841.pdf | 813 kB | Shaun Ewing | Jul 16, 1940 00:00 |
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US-2207841-A // Electric discharge device // Weinhart Howard W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 813 kB | Shaun Ewing | Jul 16, 1940 00:00 | US-2207841-A // Electric discharge device // Weinhart Howard W. // Bell Telephone Labor Inc | ||||
| PDF File 2207748.pdf | 1.20 MB | Shaun Ewing | Jul 16, 1940 00:00 |
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US-2207748-A // Regulating system // Meacham Larned A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Jul 16, 1940 00:00 | US-2207748-A // Regulating system // Meacham Larned A. // Bell Telephone Labor Inc | ||||
| PDF File 2207720.pdf | 1.44 MB | Shaun Ewing | Jul 16, 1940 00:00 |
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US-2207720-A // Communication system // Cole Ira E. ; Melhose Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.44 MB | Shaun Ewing | Jul 16, 1940 00:00 | US-2207720-A // Communication system // Cole Ira E. ; Melhose Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 2207711.pdf | 1.09 MB | Shaun Ewing | Jul 16, 1940 00:00 |
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US-2207711-A // Convoy current timing arrangement // Berger Uriah S. ; Melhose Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.09 MB | Shaun Ewing | Jul 16, 1940 00:00 | US-2207711-A // Convoy current timing arrangement // Berger Uriah S. ; Melhose Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 2207703.pdf | 1.40 MB | Shaun Ewing | Jul 16, 1940 00:00 |
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US-2207703-A // Time-of-day announcing machine // Smith Percy C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.40 MB | Shaun Ewing | Jul 16, 1940 00:00 | US-2207703-A // Time-of-day announcing machine // Smith Percy C. // Bell Telephone Labor Inc | ||||
| PDF File 2207531.pdf | 525 kB | Shaun Ewing | Jul 09, 1940 00:00 |
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US-2207531-A // Four-wire signaling circuits // Botsford Nelson // Bell Telephone Labor Inc | |||
| Version 1 (current) | 525 kB | Shaun Ewing | Jul 09, 1940 00:00 | US-2207531-A // Four-wire signaling circuits // Botsford Nelson // Bell Telephone Labor Inc | ||||
| PDF File 2207522.pdf | 512 kB | Shaun Ewing | Jul 09, 1940 00:00 |
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US-2207522-A // Concentric conductor transmission line // Smith Phillip H. ; Specht Maleolm A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 512 kB | Shaun Ewing | Jul 09, 1940 00:00 | US-2207522-A // Concentric conductor transmission line // Smith Phillip H. ; Specht Maleolm A. // Bell Telephone Labor Inc |
