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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2180539.pdf | 342 kB | Shaun Ewing | Nov 21, 1939 00:00 |
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US-2180539-A // Relay // Miller Daniel D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 342 kB | Shaun Ewing | Nov 21, 1939 00:00 | US-2180539-A // Relay // Miller Daniel D. // Bell Telephone Labor Inc | ||||
| PDF File 2180705.pdf | 360 kB | Shaun Ewing | Nov 21, 1939 00:00 |
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US-2180705-A // Relay // Fry Jacob R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 360 kB | Shaun Ewing | Nov 21, 1939 00:00 | US-2180705-A // Relay // Fry Jacob R. // Bell Telephone Labor Inc | ||||
| PDF File 2180816.pdf | 1.16 MB | Shaun Ewing | Nov 21, 1939 00:00 |
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US-2180816-A // Frequency conversion circuit // Miller Ralph L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.16 MB | Shaun Ewing | Nov 21, 1939 00:00 | US-2180816-A // Frequency conversion circuit // Miller Ralph L. // Bell Telephone Labor Inc | ||||
| PDF File 2180950.pdf | 1.52 MB | Shaun Ewing | Nov 21, 1939 00:00 |
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US-2180950-A // Guided wave transmission // Bowen Arnold E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.52 MB | Shaun Ewing | Nov 21, 1939 00:00 | US-2180950-A // Guided wave transmission // Bowen Arnold E. // Bell Telephone Labor Inc | ||||
| PDF File 2181188.pdf | 579 kB | Shaun Ewing | Nov 28, 1939 00:00 |
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US-2181188-A // Insulated cable // Kemp Archie R. ; Malm Frank S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 579 kB | Shaun Ewing | Nov 28, 1939 00:00 | US-2181188-A // Insulated cable // Kemp Archie R. ; Malm Frank S. // Bell Telephone Labor Inc | ||||
| PDF File 2181191.pdf | 778 kB | Shaun Ewing | Nov 28, 1939 00:00 |
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US-2181191-A // Telephone system // Lewis Herbert A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 778 kB | Shaun Ewing | Nov 28, 1939 00:00 | US-2181191-A // Telephone system // Lewis Herbert A. // Bell Telephone Labor Inc | ||||
| PDF File 2181265.pdf | 1.25 MB | Shaun Ewing | Nov 28, 1939 00:00 |
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US-2181265-A // Signaling system // Dudley Homer W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.25 MB | Shaun Ewing | Nov 28, 1939 00:00 | US-2181265-A // Signaling system // Dudley Homer W. // Bell Telephone Labor Inc | ||||
| PDF File 2181280.pdf | 681 kB | Shaun Ewing | Nov 28, 1939 00:00 |
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US-2181280-A // Electrical wave production // Miller Ralph L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 681 kB | Shaun Ewing | Nov 28, 1939 00:00 | US-2181280-A // Electrical wave production // Miller Ralph L. // Bell Telephone Labor Inc | ||||
| PDF File 2181494.pdf | 754 kB | Shaun Ewing | Nov 28, 1939 00:00 |
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US-2181494-A // Light-sensitive electric device // Nix Foster C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 754 kB | Shaun Ewing | Nov 28, 1939 00:00 | US-2181494-A // Light-sensitive electric device // Nix Foster C. // Bell Telephone Labor Inc | ||||
| PDF File 2181560.pdf | 665 kB | Shaun Ewing | Nov 28, 1939 00:00 |
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US-2181560-A // Electrical testing system // Blount Frank E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 665 kB | Shaun Ewing | Nov 28, 1939 00:00 | US-2181560-A // Electrical testing system // Blount Frank E. // Bell Telephone Labor Inc | ||||
| PDF File 2181579.pdf | 431 kB | Shaun Ewing | Nov 28, 1939 00:00 |
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US-2181579-A // Signal transmission line // Curtis Austen M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 431 kB | Shaun Ewing | Nov 28, 1939 00:00 | US-2181579-A // Signal transmission line // Curtis Austen M. // Bell Telephone Labor Inc | ||||
| PDF File 2181695.pdf | 347 kB | Shaun Ewing | Nov 28, 1939 00:00 |
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US-2181695-A // Electrical condenser // Given Frederick J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 347 kB | Shaun Ewing | Nov 28, 1939 00:00 | US-2181695-A // Electrical condenser // Given Frederick J. // Bell Telephone Labor Inc | ||||
| PDF File 2181707.pdf | 249 kB | Shaun Ewing | Nov 28, 1939 00:00 |
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US-2181707-A // Pole piece for magnetic telegraphones // Perreault George E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 249 kB | Shaun Ewing | Nov 28, 1939 00:00 | US-2181707-A // Pole piece for magnetic telegraphones // Perreault George E. // Bell Telephone Labor Inc | ||||
| PDF File 2181865.pdf | 762 kB | Shaun Ewing | Dec 05, 1939 00:00 |
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US-2181865-A // Multigrid tube amplifier // Black Knox C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 762 kB | Shaun Ewing | Dec 05, 1939 00:00 | US-2181865-A // Multigrid tube amplifier // Black Knox C. // Bell Telephone Labor Inc | ||||
| PDF File 2181909.pdf | 391 kB | Shaun Ewing | Dec 05, 1939 00:00 |
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US-2181909-A // Negative impedance circuit // Peterson Liss C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 391 kB | Shaun Ewing | Dec 05, 1939 00:00 | US-2181909-A // Negative impedance circuit // Peterson Liss C. // Bell Telephone Labor Inc | ||||
| PDF File 2181910.pdf | 525 kB | Shaun Ewing | Dec 05, 1939 00:00 |
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US-2181910-A // Wave amplification // Peterson Liss C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 525 kB | Shaun Ewing | Dec 05, 1939 00:00 | US-2181910-A // Wave amplification // Peterson Liss C. // Bell Telephone Labor Inc | ||||
| PDF File 2182076.pdf | 1.03 MB | Shaun Ewing | Dec 05, 1939 00:00 |
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US-2182076-A // Viscous dampener // Elmer Lloyd A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.03 MB | Shaun Ewing | Dec 05, 1939 00:00 | US-2182076-A // Viscous dampener // Elmer Lloyd A. // Bell Telephone Labor Inc | ||||
| PDF File 2182330.pdf | 506 kB | Shaun Ewing | Dec 05, 1939 00:00 |
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US-2182330-A // Method of fabricating tubular structures // Windeler Alfred S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 506 kB | Shaun Ewing | Dec 05, 1939 00:00 | US-2182330-A // Method of fabricating tubular structures // Windeler Alfred S. // Bell Telephone Labor Inc | ||||
| PDF File 2182337.pdf | 629 kB | Shaun Ewing | Dec 05, 1939 00:00 |
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US-2182337-A // Transmission system // Green Estill I. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 629 kB | Shaun Ewing | Dec 05, 1939 00:00 | US-2182337-A // Transmission system // Green Estill I. // Bell Telephone Labor Inc | ||||
| PDF File 2182340.pdf | 356 kB | Shaun Ewing | Dec 05, 1939 00:00 |
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US-2182340-A // Signaling system // Hearn Richard B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 356 kB | Shaun Ewing | Dec 05, 1939 00:00 | US-2182340-A // Signaling system // Hearn Richard B. // Bell Telephone Labor Inc |
