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 1730614.pdf | 570 kB | Shaun Ewing | Oct 08, 1929 00:00 |
|
US-1730614-A // Synchronous vibratory relay system // Knoop William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 570 kB | Shaun Ewing | Oct 08, 1929 00:00 | US-1730614-A // Synchronous vibratory relay system // Knoop William A. // Bell Telephone Labor Inc | ||||
| PDF File 1780921.pdf | 568 kB | Shaun Ewing | Nov 11, 1930 00:00 |
|
US-1780921-A // Communication system // Horton Joseph W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 568 kB | Shaun Ewing | Nov 11, 1930 00:00 | US-1780921-A // Communication system // Horton Joseph W. // Bell Telephone Labor Inc | ||||
| PDF File 1762973.pdf | 568 kB | Shaun Ewing | Jun 10, 1930 00:00 |
|
US-1762973-A // Alarm system // Frederick Halsey Augustus // Bell Telephone Labor Inc | |||
| Version 1 (current) | 568 kB | Shaun Ewing | Jun 10, 1930 00:00 | US-1762973-A // Alarm system // Frederick Halsey Augustus // Bell Telephone Labor Inc | ||||
| PDF File 1711666.pdf | 568 kB | Shaun Ewing | May 07, 1929 00:00 |
|
US-1711666-A // Sound reproducing and recording device // Adams Edgar Whittington // Bell Telephone Labor Inc | |||
| Version 1 (current) | 568 kB | Shaun Ewing | May 07, 1929 00:00 | US-1711666-A // Sound reproducing and recording device // Adams Edgar Whittington // Bell Telephone Labor Inc | ||||
| PDF File 1739668.pdf | 563 kB | Shaun Ewing | Dec 17, 1929 00:00 |
|
US-1739668-A // Transmission system // Green Charles W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 563 kB | Shaun Ewing | Dec 17, 1929 00:00 | US-1739668-A // Transmission system // Green Charles W. // Bell Telephone Labor Inc | ||||
| PDF File 1762777.pdf | 563 kB | Shaun Ewing | Jun 10, 1930 00:00 |
|
US-1762777-A // Transmission system // Goodrum Charles L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 563 kB | Shaun Ewing | Jun 10, 1930 00:00 | US-1762777-A // Transmission system // Goodrum Charles L. // Bell Telephone Labor Inc | ||||
| PDF File 1651021.pdf | 562 kB | Shaun Ewing | Nov 29, 1927 00:00 |
|
US-1651021-A // Voltage-limiting device // Field Frank E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 562 kB | Shaun Ewing | Nov 29, 1927 00:00 | US-1651021-A // Voltage-limiting device // Field Frank E. // Bell Telephone Labor Inc | ||||
| PDF File 1738292.pdf | 561 kB | Shaun Ewing | Dec 03, 1929 00:00 |
|
US-1738292-A // Submarine duplex telegraph system // Gilbert John J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 561 kB | Shaun Ewing | Dec 03, 1929 00:00 | US-1738292-A // Submarine duplex telegraph system // Gilbert John J. // Bell Telephone Labor Inc | ||||
| PDF File 1722033.pdf | 561 kB | Shaun Ewing | Jul 23, 1929 00:00 |
|
US-1722033-A // Telephone-exchange system // Bragg Herbert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 561 kB | Shaun Ewing | Jul 23, 1929 00:00 | US-1722033-A // Telephone-exchange system // Bragg Herbert E. // Bell Telephone Labor Inc | ||||
| PDF File 1775241.pdf | 556 kB | Shaun Ewing | Sept 09, 1930 00:00 |
|
US-1775241-A // Electrooptical system // Horton Joseph W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 556 kB | Shaun Ewing | Sept 09, 1930 00:00 | US-1775241-A // Electrooptical system // Horton Joseph W. // Bell Telephone Labor Inc | ||||
| PDF File 1647256.pdf | 549 kB | Shaun Ewing | Nov 01, 1927 00:00 |
|
US-1647256-A // Selector-switch circuits for step-by-step systems // Stokely Ray L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 549 kB | Shaun Ewing | Nov 01, 1927 00:00 | US-1647256-A // Selector-switch circuits for step-by-step systems // Stokely Ray L. // Bell Telephone Labor Inc | ||||
| PDF File 1763017.pdf | 548 kB | Shaun Ewing | Jun 10, 1930 00:00 |
|
US-1763017-A // Regulator system // Stoller Hugh M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 548 kB | Shaun Ewing | Jun 10, 1930 00:00 | US-1763017-A // Regulator system // Stoller Hugh M. // Bell Telephone Labor Inc | ||||
| PDF File 1763014.pdf | 547 kB | Shaun Ewing | Jun 10, 1930 00:00 |
|
US-1763014-A // Regulator system // Stacy Leland J. ; Krom Myron E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 547 kB | Shaun Ewing | Jun 10, 1930 00:00 | US-1763014-A // Regulator system // Stacy Leland J. ; Krom Myron E. // Bell Telephone Labor Inc | ||||
| PDF File 1757727.pdf | 546 kB | Shaun Ewing | May 06, 1930 00:00 |
|
US-1757727-A // Electric control device // Marrison Warren A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 546 kB | Shaun Ewing | May 06, 1930 00:00 | US-1757727-A // Electric control device // Marrison Warren A. // Bell Telephone Labor Inc | ||||
| PDF File 1724924.pdf | 543 kB | Shaun Ewing | Aug 20, 1929 00:00 |
|
US-1724924-A // Telephone system // Graham Frank H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 543 kB | Shaun Ewing | Aug 20, 1929 00:00 | US-1724924-A // Telephone system // Graham Frank H. // Bell Telephone Labor Inc | ||||
| PDF File 1779382.pdf | 542 kB | Shaun Ewing | Oct 21, 1930 00:00 |
|
US-1779382-A // Negative impedance circuit // Mathes Robert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 542 kB | Shaun Ewing | Oct 21, 1930 00:00 | US-1779382-A // Negative impedance circuit // Mathes Robert C. // Bell Telephone Labor Inc | ||||
| PDF File 1753336.pdf | 542 kB | Shaun Ewing | Apr 08, 1930 00:00 |
|
US-1753336-A // Duplex telegraph system for loaded cables // Gilbert John J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 542 kB | Shaun Ewing | Apr 08, 1930 00:00 | US-1753336-A // Duplex telegraph system for loaded cables // Gilbert John J. // Bell Telephone Labor Inc | ||||
| PDF File 1759612.pdf | 541 kB | Shaun Ewing | May 20, 1930 00:00 |
|
US-1759612-A // Method of producing magnetic bodies // Given Frederick J. ; Greenidge Ralph M. C. ; Jr. John R. Weeks, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 541 kB | Shaun Ewing | May 20, 1930 00:00 | US-1759612-A // Method of producing magnetic bodies // Given Frederick J. ; Greenidge Ralph M. C. ; Jr. John R. Weeks, // Bell Telephone Labor Inc | ||||
| PDF File 1724962.pdf | 540 kB | Shaun Ewing | Aug 20, 1929 00:00 |
|
US-1724962-A // Electrical testing system // Peoples Robert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 540 kB | Shaun Ewing | Aug 20, 1929 00:00 | US-1724962-A // Electrical testing system // Peoples Robert E. // Bell Telephone Labor Inc | ||||
| PDF File 1636436.pdf | 538 kB | Shaun Ewing | Jul 19, 1927 00:00 |
|
US-1636436-A // System for wave analysis // Rettenmeyer Francis X. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 538 kB | Shaun Ewing | Jul 19, 1927 00:00 | US-1636436-A // System for wave analysis // Rettenmeyer Francis X. // Bell Telephone Labor Inc |
