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 2170873.pdf | 343 kB | Shaun Ewing | Aug 29, 1939 00:00 |
|
US-2170873-A // Electrical system // Price Arnold F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 343 kB | Shaun Ewing | Aug 29, 1939 00:00 | US-2170873-A // Electrical system // Price Arnold F. // Bell Telephone Labor Inc | ||||
| PDF File 2170941.pdf | 1.41 MB | Shaun Ewing | Aug 29, 1939 00:00 |
|
US-2170941-A // Transmission control in signaling systems // Davis Kingsbury H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.41 MB | Shaun Ewing | Aug 29, 1939 00:00 | US-2170941-A // Transmission control in signaling systems // Davis Kingsbury H. // Bell Telephone Labor Inc | ||||
| PDF File 2170944.pdf | 1.13 MB | Shaun Ewing | Aug 29, 1939 00:00 |
|
US-2170944-A // Multicathode ray discharge device // Glass Myron S. ; Hale Douglas A. S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.13 MB | Shaun Ewing | Aug 29, 1939 00:00 | US-2170944-A // Multicathode ray discharge device // Glass Myron S. ; Hale Douglas A. S. // Bell Telephone Labor Inc | ||||
| PDF File 2171119.pdf | 317 kB | Shaun Ewing | Aug 29, 1939 00:00 |
|
US-2171119-A // Strand-winding machine // Belits William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 317 kB | Shaun Ewing | Aug 29, 1939 00:00 | US-2171119-A // Strand-winding machine // Belits William A. // Bell Telephone Labor Inc | ||||
| PDF File 2171127.pdf | 577 kB | Shaun Ewing | Aug 29, 1939 00:00 |
|
US-2171127-A // Condenser // Kohman Girard T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 577 kB | Shaun Ewing | Aug 29, 1939 00:00 | US-2171127-A // Condenser // Kohman Girard T. // Bell Telephone Labor Inc | ||||
| PDF File 2171333.pdf | 380 kB | Shaun Ewing | Aug 29, 1939 00:00 |
|
US-2171333-A // Relay // Fry Jacob R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 380 kB | Shaun Ewing | Aug 29, 1939 00:00 | US-2171333-A // Relay // Fry Jacob R. // Bell Telephone Labor Inc | ||||
| PDF File 2171733.pdf | 590 kB | Shaun Ewing | Sept 05, 1939 00:00 |
|
US-2171733-A // Acoustic device // Thuras Albert L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 590 kB | Shaun Ewing | Sept 05, 1939 00:00 | US-2171733-A // Acoustic device // Thuras Albert L. // Bell Telephone Labor Inc | ||||
| PDF File 2172453.pdf | 523 kB | Shaun Ewing | Sept 12, 1939 00:00 |
|
US-2172453-A // Radio transmitter // Rose Charles F. P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 523 kB | Shaun Ewing | Sept 12, 1939 00:00 | US-2172453-A // Radio transmitter // Rose Charles F. P. // Bell Telephone Labor Inc | ||||
| PDF File 2172832.pdf | 1.03 MB | Shaun Ewing | Sept 12, 1939 00:00 |
|
US-2172832-A // Carrier current transmission system // Caruthers Robert S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.03 MB | Shaun Ewing | Sept 12, 1939 00:00 | US-2172832-A // Carrier current transmission system // Caruthers Robert S. // Bell Telephone Labor Inc | ||||
| PDF File 2173170.pdf | 1.17 MB | Shaun Ewing | Sept 19, 1939 00:00 |
|
US-2173170-A // Teletypewriter apparatus // Kinkead Fullerton S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.17 MB | Shaun Ewing | Sept 19, 1939 00:00 | US-2173170-A // Teletypewriter apparatus // Kinkead Fullerton S. // Bell Telephone Labor Inc | ||||
| PDF File 2173183.pdf | 781 kB | Shaun Ewing | Sept 19, 1939 00:00 |
|
US-2173183-A // Cross-talk measurement // Schramm Charles W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 781 kB | Shaun Ewing | Sept 19, 1939 00:00 | US-2173183-A // Cross-talk measurement // Schramm Charles W. // Bell Telephone Labor Inc | ||||
| PDF File 2173335.pdf | 677 kB | Shaun Ewing | Sept 19, 1939 00:00 |
|
US-2173335-A // Telegraph exchange system // Kinkead Fullerton S. ; Singer Fred J. // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 677 kB | Shaun Ewing | Sept 19, 1939 00:00 | US-2173335-A // Telegraph exchange system // Kinkead Fullerton S. ; Singer Fred J. // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 2173472.pdf | 674 kB | Shaun Ewing | Sept 19, 1939 00:00 |
|
US-2173472-A // Transmission system // Jr. Stephen Doba, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 674 kB | Shaun Ewing | Sept 19, 1939 00:00 | US-2173472-A // Transmission system // Jr. Stephen Doba, // Bell Telephone Labor Inc | ||||
| PDF File 2173481.pdf | 988 kB | Shaun Ewing | Sept 19, 1939 00:00 |
|
US-2173481-A // Manufacture of electroacoustic devices // Kalin Walter // Bell Telephone Labor Inc | |||
| Version 1 (current) | 988 kB | Shaun Ewing | Sept 19, 1939 00:00 | US-2173481-A // Manufacture of electroacoustic devices // Kalin Walter // Bell Telephone Labor Inc | ||||
| PDF File 2173548.pdf | 1.22 MB | Shaun Ewing | Sept 19, 1939 00:00 |
|
US-2173548-A // Selector switch // Carpenter Warren W. ; Mallina Rudolph F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Sept 19, 1939 00:00 | US-2173548-A // Selector switch // Carpenter Warren W. ; Mallina Rudolph F. // Bell Telephone Labor Inc | ||||
| PDF File 2173551.pdf | 2.55 MB | Shaun Ewing | Sept 19, 1939 00:00 |
|
US-2173551-A // Communication system // Fitch Karl E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.55 MB | Shaun Ewing | Sept 19, 1939 00:00 | US-2173551-A // Communication system // Fitch Karl E. // Bell Telephone Labor Inc | ||||
| PDF File 2173589.pdf | 1.84 MB | Shaun Ewing | Sept 19, 1939 00:00 |
|
US-2173589-A // Piezoelectric apparatus // Mason Warren P. ; Sykes Roger A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.84 MB | Shaun Ewing | Sept 19, 1939 00:00 | US-2173589-A // Piezoelectric apparatus // Mason Warren P. ; Sykes Roger A. // Bell Telephone Labor Inc | ||||
| PDF File 2173675.pdf | 1.63 MB | Shaun Ewing | Sept 19, 1939 00:00 |
|
US-2173675-A // Telephone system // Bowne Langford J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.63 MB | Shaun Ewing | Sept 19, 1939 00:00 | US-2173675-A // Telephone system // Bowne Langford J. // Bell Telephone Labor Inc | ||||
| PDF File 2173679.pdf | 807 kB | Shaun Ewing | Sept 19, 1939 00:00 |
|
US-2173679-A // Electron discharge device // Clark James E. ; Ronci Victor L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 807 kB | Shaun Ewing | Sept 19, 1939 00:00 | US-2173679-A // Electron discharge device // Clark James E. ; Ronci Victor L. // Bell Telephone Labor Inc | ||||
| PDF File 2173816.pdf | 1.06 MB | Shaun Ewing | Sept 26, 1939 00:00 |
|
US-2173816-A // Transmission system // Bjornson Bjorn G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.06 MB | Shaun Ewing | Sept 26, 1939 00:00 | US-2173816-A // Transmission system // Bjornson Bjorn G. // Bell Telephone Labor Inc |
