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 2181707.pdf | 249 kB | Shaun Ewing | Nov 28, 1939 00:00 |
|
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 2181695.pdf | 347 kB | Shaun Ewing | Nov 28, 1939 00:00 |
|
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 2181579.pdf | 431 kB | Shaun Ewing | Nov 28, 1939 00:00 |
|
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 2181560.pdf | 665 kB | Shaun Ewing | Nov 28, 1939 00:00 |
|
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 2181494.pdf | 754 kB | Shaun Ewing | Nov 28, 1939 00:00 |
|
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 2181280.pdf | 681 kB | Shaun Ewing | Nov 28, 1939 00:00 |
|
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 2181265.pdf | 1.25 MB | Shaun Ewing | Nov 28, 1939 00:00 |
|
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 2181191.pdf | 778 kB | Shaun Ewing | Nov 28, 1939 00:00 |
|
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 2181188.pdf | 579 kB | Shaun Ewing | Nov 28, 1939 00:00 |
|
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 2180950.pdf | 1.52 MB | Shaun Ewing | Nov 21, 1939 00:00 |
|
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 2180816.pdf | 1.16 MB | Shaun Ewing | Nov 21, 1939 00:00 |
|
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 2180705.pdf | 360 kB | Shaun Ewing | Nov 21, 1939 00:00 |
|
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 2180539.pdf | 342 kB | Shaun Ewing | Nov 21, 1939 00:00 |
|
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 2180365.pdf | 803 kB | Shaun Ewing | Nov 21, 1939 00:00 |
|
US-2180365-A // Sweep circuits // Norton Frank R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 803 kB | Shaun Ewing | Nov 21, 1939 00:00 | US-2180365-A // Sweep circuits // Norton Frank R. // Bell Telephone Labor Inc | ||||
| PDF File 2180364.pdf | 692 kB | Shaun Ewing | Nov 21, 1939 00:00 |
|
US-2180364-A // Cathode ray sweep circuits // Norton Frank R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 692 kB | Shaun Ewing | Nov 21, 1939 00:00 | US-2180364-A // Cathode ray sweep circuits // Norton Frank R. // Bell Telephone Labor Inc | ||||
| PDF File 2180334.pdf | 499 kB | Shaun Ewing | Nov 21, 1939 00:00 |
|
US-2180334-A // Signaling system // Bredehoft Harold A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 499 kB | Shaun Ewing | Nov 21, 1939 00:00 | US-2180334-A // Signaling system // Bredehoft Harold A. // Bell Telephone Labor Inc | ||||
| PDF File 2180288.pdf | 379 kB | Shaun Ewing | Nov 14, 1939 00:00 |
|
US-2180288-A // Electromagnet // Beach William C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 379 kB | Shaun Ewing | Nov 14, 1939 00:00 | US-2180288-A // Electromagnet // Beach William C. // Bell Telephone Labor Inc | ||||
| PDF File 2179971.pdf | 473 kB | Shaun Ewing | Nov 14, 1939 00:00 |
|
US-2179971-A // Means and method of sectionalizing coaxial cables // Wentz Jesse F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 473 kB | Shaun Ewing | Nov 14, 1939 00:00 | US-2179971-A // Means and method of sectionalizing coaxial cables // Wentz Jesse F. // Bell Telephone Labor Inc | ||||
| PDF File 2179915.pdf | 931 kB | Shaun Ewing | Nov 14, 1939 00:00 |
|
US-2179915-A // Gain control circuits // Blair Royer R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 931 kB | Shaun Ewing | Nov 14, 1939 00:00 | US-2179915-A // Gain control circuits // Blair Royer R. // Bell Telephone Labor Inc | ||||
| PDF File 2179826.pdf | 524 kB | Shaun Ewing | Nov 14, 1939 00:00 |
|
US-2179826-A // Protective device // May David T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 524 kB | Shaun Ewing | Nov 14, 1939 00:00 | US-2179826-A // Protective device // May David T. // Bell Telephone Labor Inc |
