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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1918822.pdf | 985 kB | Shaun Ewing | Jul 18, 1933 00:00 |
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US-1918822-A // Signal transmission system // Norman Nathaniel C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 985 kB | Shaun Ewing | Jul 18, 1933 00:00 | US-1918822-A // Signal transmission system // Norman Nathaniel C. // Bell Telephone Labor Inc | ||||
| PDF File 1918309.pdf | 489 kB | Shaun Ewing | Jul 18, 1933 00:00 |
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US-1918309-A // Glow discharge lamp // Weinhart Howard W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 489 kB | Shaun Ewing | Jul 18, 1933 00:00 | US-1918309-A // Glow discharge lamp // Weinhart Howard W. // Bell Telephone Labor Inc | ||||
| PDF File 1918271.pdf | 873 kB | Shaun Ewing | Jul 18, 1933 00:00 |
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US-1918271-A // Sound recording and reproducing system // Keller Arthur C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 873 kB | Shaun Ewing | Jul 18, 1933 00:00 | US-1918271-A // Sound recording and reproducing system // Keller Arthur C. // Bell Telephone Labor Inc | ||||
| PDF File 1918267.pdf | 710 kB | Shaun Ewing | Jul 18, 1933 00:00 |
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US-1918267-A // Sound recording and reproducing system // Herriott William // Bell Telephone Labor Inc | |||
| Version 1 (current) | 710 kB | Shaun Ewing | Jul 18, 1933 00:00 | US-1918267-A // Sound recording and reproducing system // Herriott William // Bell Telephone Labor Inc | ||||
| PDF File 1918259.pdf | 509 kB | Shaun Ewing | Jul 18, 1933 00:00 |
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US-1918259-A // Electrical resistance // Gabriel John C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 509 kB | Shaun Ewing | Jul 18, 1933 00:00 | US-1918259-A // Electrical resistance // Gabriel John C. // Bell Telephone Labor Inc | ||||
| PDF File 1918244.pdf | 626 kB | Shaun Ewing | Jul 18, 1933 00:00 |
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US-1918244-A // Manufacture of vapor electric devices // Bond Donald S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 626 kB | Shaun Ewing | Jul 18, 1933 00:00 | US-1918244-A // Manufacture of vapor electric devices // Bond Donald S. // Bell Telephone Labor Inc | ||||
| PDF File 1917921.pdf | 1.07 MB | Shaun Ewing | Jul 11, 1933 00:00 |
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US-1917921-A // Frequency changer system // Burton Everett T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.07 MB | Shaun Ewing | Jul 11, 1933 00:00 | US-1917921-A // Frequency changer system // Burton Everett T. // Bell Telephone Labor Inc | ||||
| PDF File 1917885.pdf | 627 kB | Shaun Ewing | Jul 11, 1933 00:00 |
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US-1917885-A // Telegraph repeater circuit // Hearn Richard B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 627 kB | Shaun Ewing | Jul 11, 1933 00:00 | US-1917885-A // Telegraph repeater circuit // Hearn Richard B. // Bell Telephone Labor Inc | ||||
| PDF File 1917884.pdf | 4.42 MB | Shaun Ewing | Jul 11, 1933 00:00 |
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US-1917884-A // Call charging telephone system // Hague Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 4.42 MB | Shaun Ewing | Jul 11, 1933 00:00 | US-1917884-A // Call charging telephone system // Hague Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 1917882.pdf | 509 kB | Shaun Ewing | Jul 11, 1933 00:00 |
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US-1917882-A // Signaling system // Gilbert John J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 509 kB | Shaun Ewing | Jul 11, 1933 00:00 | US-1917882-A // Signaling system // Gilbert John J. // Bell Telephone Labor Inc | ||||
| PDF File 1917881.pdf | 1.03 MB | Shaun Ewing | Jul 11, 1933 00:00 |
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US-1917881-A // Remote control device // Germanton Charles E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.03 MB | Shaun Ewing | Jul 11, 1933 00:00 | US-1917881-A // Remote control device // Germanton Charles E. // Bell Telephone Labor Inc | ||||
| PDF File 1917879.pdf | 677 kB | Shaun Ewing | Jul 11, 1933 00:00 |
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US-1917879-A // Telephone system // Draper John B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 677 kB | Shaun Ewing | Jul 11, 1933 00:00 | US-1917879-A // Telephone system // Draper John B. // Bell Telephone Labor Inc | ||||
| PDF File 1917859.pdf | 400 kB | Shaun Ewing | Jul 11, 1933 00:00 |
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US-1917859-A // Telephone system // Stacy Leland J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 400 kB | Shaun Ewing | Jul 11, 1933 00:00 | US-1917859-A // Telephone system // Stacy Leland J. // Bell Telephone Labor Inc | ||||
| PDF File 1917072.pdf | 811 kB | Shaun Ewing | Jul 04, 1933 00:00 |
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US-1917072-A // Acoustic device // Smythe Edwin H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 811 kB | Shaun Ewing | Jul 04, 1933 00:00 | US-1917072-A // Acoustic device // Smythe Edwin H. // Bell Telephone Labor Inc | ||||
| PDF File 1917064.pdf | 659 kB | Shaun Ewing | Jul 04, 1933 00:00 |
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US-1917064-A // Vacuum tube circuits // Romnes Haaken I. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 659 kB | Shaun Ewing | Jul 04, 1933 00:00 | US-1917064-A // Vacuum tube circuits // Romnes Haaken I. // Bell Telephone Labor Inc | ||||
| PDF File 1917061.pdf | 1.61 MB | Shaun Ewing | Jul 04, 1933 00:00 |
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US-1917061-A // Composite transmission system // Quarles Donald A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.61 MB | Shaun Ewing | Jul 04, 1933 00:00 | US-1917061-A // Composite transmission system // Quarles Donald A. // Bell Telephone Labor Inc | ||||
| PDF File 1917052.pdf | 1.08 MB | Shaun Ewing | Jul 04, 1933 00:00 |
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US-1917052-A // Power line carrier current system // Nebel Charles N. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.08 MB | Shaun Ewing | Jul 04, 1933 00:00 | US-1917052-A // Power line carrier current system // Nebel Charles N. // Bell Telephone Labor Inc | ||||
| PDF File 1917035.pdf | 1.20 MB | Shaun Ewing | Jul 04, 1933 00:00 |
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US-1917035-A // Circuit for reducing interference // Jacobs Oliver B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Jul 04, 1933 00:00 | US-1917035-A // Circuit for reducing interference // Jacobs Oliver B. // Bell Telephone Labor Inc | ||||
| PDF File 1917016.pdf | 371 kB | Shaun Ewing | Jul 04, 1933 00:00 |
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US-1917016-A // Circuit for reducing interference // Burton Everett T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 371 kB | Shaun Ewing | Jul 04, 1933 00:00 | US-1917016-A // Circuit for reducing interference // Burton Everett T. // Bell Telephone Labor Inc | ||||
| PDF File 1917015.pdf | 362 kB | Shaun Ewing | Jul 04, 1933 00:00 |
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US-1917015-A // Power amplifier // Burton Everett T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 362 kB | Shaun Ewing | Jul 04, 1933 00:00 | US-1917015-A // Power amplifier // Burton Everett T. // Bell Telephone Labor Inc |
