Williamson; Roger J
Patent Applications and Registrations
Patent applications and USPTO patent grants for Williamson; Roger J.The latest application filed is for "voice over digital subscriber line call redirection for lifeline service".
- Williamson; Roger J - Much Hadham GB
- Williamson; Roger J. - Harlow GB
| Patent | Date |
|---|---|
| Voice over digital subscriber line call redirection for lifeline service Grant 6,400,803 - Tate , et al. June 4, 2 | 2002-06-04 |
| Lifeline telephony provision for voice over digital subscriber line Grant 6,272,209 - Bridger , et al. August 7, 2 | 2001-08-07 |
| Crystal resonator device Grant 5,304,887 - Heinecke , et al. April 19, 1 | 1994-04-19 |
| Method of measuring the parameters of a resonator Grant 4,782,281 - Williamson November 1, 1 | 1988-11-01 |
| Apparatus for measuring fluid flow Grant 4,372,165 - Pitt , et al. February 8, 1 | 1983-02-08 |
| Fibre optic transducer Grant 4,339,661 - Pitt , et al. July 13, 1 | 1982-07-13 |
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