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 1763057.pdf | 462 kB | Shaun Ewing | Jun 10, 1930 00:00 |
|
US-1763057-A // Regulator system // Krom Myron E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 462 kB | Shaun Ewing | Jun 10, 1930 00:00 | US-1763057-A // Regulator system // Krom Myron E. // Bell Telephone Labor Inc | ||||
| PDF File 1741767.pdf | 460 kB | Shaun Ewing | Dec 31, 1929 00:00 |
|
US-1741767-A // Carrier-current signaling system // Green Charles W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 460 kB | Shaun Ewing | Dec 31, 1929 00:00 | US-1741767-A // Carrier-current signaling system // Green Charles W. // Bell Telephone Labor Inc | ||||
| PDF File 1784825.pdf | 460 kB | Shaun Ewing | Dec 16, 1930 00:00 |
|
US-1784825-A // Speech transmission // Dudley Homer W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 460 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784825-A // Speech transmission // Dudley Homer W. // Bell Telephone Labor Inc | ||||
| PDF File 1690201.pdf | 459 kB | Shaun Ewing | Nov 06, 1928 00:00 |
|
US-1690201-A // Signaling conductor // Mougey Wilbur E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 459 kB | Shaun Ewing | Nov 06, 1928 00:00 | US-1690201-A // Signaling conductor // Mougey Wilbur E. // Bell Telephone Labor Inc | ||||
| PDF File 1695057.pdf | 459 kB | Shaun Ewing | Dec 11, 1928 00:00 |
|
US-1695057-A // Telephone system // Murphy Paul B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 459 kB | Shaun Ewing | Dec 11, 1928 00:00 | US-1695057-A // Telephone system // Murphy Paul B. // Bell Telephone Labor Inc | ||||
| PDF File 1673031.pdf | 459 kB | Shaun Ewing | Jun 12, 1928 00:00 |
|
US-1673031-A // Wave transmission system // Whiting Donald F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 459 kB | Shaun Ewing | Jun 12, 1928 00:00 | US-1673031-A // Wave transmission system // Whiting Donald F. // Bell Telephone Labor Inc | ||||
| PDF File 1708933.pdf | 458 kB | Shaun Ewing | Apr 16, 1929 00:00 |
|
US-1708933-A // Signaling system // Beach William C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 458 kB | Shaun Ewing | Apr 16, 1929 00:00 | US-1708933-A // Signaling system // Beach William C. // Bell Telephone Labor Inc | ||||
| PDF File 1784978.pdf | 458 kB | Shaun Ewing | Dec 16, 1930 00:00 |
|
US-1784978-A // Testing apparatus // Taylor Hugh S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 458 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784978-A // Testing apparatus // Taylor Hugh S. // Bell Telephone Labor Inc | ||||
| PDF File 1658210.pdf | 457 kB | Shaun Ewing | Feb 07, 1928 00:00 |
|
US-1658210-A // Electric-wave signaling system // Ryan Francis M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 457 kB | Shaun Ewing | Feb 07, 1928 00:00 | US-1658210-A // Electric-wave signaling system // Ryan Francis M. // Bell Telephone Labor Inc | ||||
| PDF File 1690280.pdf | 454 kB | Shaun Ewing | Nov 06, 1928 00:00 |
|
US-1690280-A // Electrical testing // Curtis Austen M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 454 kB | Shaun Ewing | Nov 06, 1928 00:00 | US-1690280-A // Electrical testing // Curtis Austen M. // Bell Telephone Labor Inc | ||||
| PDF File 1709554.pdf | 449 kB | Shaun Ewing | Apr 16, 1929 00:00 |
|
US-1709554-A // Voice-frequency calling system // Black Harold S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 449 kB | Shaun Ewing | Apr 16, 1929 00:00 | US-1709554-A // Voice-frequency calling system // Black Harold S. // Bell Telephone Labor Inc | ||||
| PDF File 1725566.pdf | 448 kB | Shaun Ewing | Aug 20, 1929 00:00 |
|
US-1725566-A // Secret communication system // Chesnut Roy W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 448 kB | Shaun Ewing | Aug 20, 1929 00:00 | US-1725566-A // Secret communication system // Chesnut Roy W. // Bell Telephone Labor Inc | ||||
| PDF File 1738322.pdf | 448 kB | Shaun Ewing | Dec 03, 1929 00:00 |
|
US-1738322-A // Acoustic device // Schlenker Vesper A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 448 kB | Shaun Ewing | Dec 03, 1929 00:00 | US-1738322-A // Acoustic device // Schlenker Vesper A. // Bell Telephone Labor Inc | ||||
| PDF File 1762941.pdf | 448 kB | Shaun Ewing | Jun 10, 1930 00:00 |
|
US-1762941-A // Paper-insulated conductor // Wood Ernest B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 448 kB | Shaun Ewing | Jun 10, 1930 00:00 | US-1762941-A // Paper-insulated conductor // Wood Ernest B. // Bell Telephone Labor Inc | ||||
| PDF File 1730981.pdf | 447 kB | Shaun Ewing | Oct 08, 1929 00:00 |
|
US-1730981-A // Telephone system // Murphy Paul B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Oct 08, 1929 00:00 | US-1730981-A // Telephone system // Murphy Paul B. // Bell Telephone Labor Inc | ||||
| PDF File 1768251.pdf | 447 kB | Shaun Ewing | Jun 24, 1930 00:00 |
|
US-1768251-A // Electric wave transmission device // Heising Raymond A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Jun 24, 1930 00:00 | US-1768251-A // Electric wave transmission device // Heising Raymond A. // Bell Telephone Labor Inc | ||||
| PDF File 1691098.pdf | 443 kB | Shaun Ewing | Nov 13, 1928 00:00 |
|
US-1691098-A // Means for coupling circuits of different impedance characteristics // Whiting Donald F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 443 kB | Shaun Ewing | Nov 13, 1928 00:00 | US-1691098-A // Means for coupling circuits of different impedance characteristics // Whiting Donald F. // Bell Telephone Labor Inc | ||||
| PDF File 1739752.pdf | 442 kB | Shaun Ewing | Dec 17, 1929 00:00 |
|
US-1739752-A // Magnetic material and appliance // Elmen Gustaf W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 442 kB | Shaun Ewing | Dec 17, 1929 00:00 | US-1739752-A // Magnetic material and appliance // Elmen Gustaf W. // Bell Telephone Labor Inc | ||||
| PDF File 1707544.pdf | 442 kB | Shaun Ewing | Apr 02, 1929 00:00 |
|
US-1707544-A // Electrodynamic device // Thuras Albert L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 442 kB | Shaun Ewing | Apr 02, 1929 00:00 | US-1707544-A // Electrodynamic device // Thuras Albert L. // Bell Telephone Labor Inc | ||||
| PDF File 1700536.pdf | 436 kB | Shaun Ewing | Jan 29, 1929 00:00 |
|
US-1700536-A // Frequency translating circuits // Keith Clyde R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 436 kB | Shaun Ewing | Jan 29, 1929 00:00 | US-1700536-A // Frequency translating circuits // Keith Clyde R. // Bell Telephone Labor Inc |
