Williamson; Dennis F.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Williamson; Dennis F..The latest application filed is for "electrical propulsion process and system for a traction vehicle with an on-board source of power".
- Williamson; Dennis F. - Kingston CA
- Williamson; Dennis F. - Erie PA
- Williamson; Dennis F. - Media PA
| Patent | Date |
|---|---|
| Electrical propulsion process and system for a traction vehicle with an on-board source of power Grant 4,292,531 - Williamson September 29, 1 | 1981-09-29 |
| Motor/brake transitioning for an inverter driven a-c induction motor Grant 4,215,304 - D'Atre , et al. July 29, 1 | 1980-07-29 |
| Regenerative braking system for a chopper controlled electric traction motor Grant 4,095,154 - Williamson June 13, 1 | 1978-06-13 |
| Circuit Breaker Monitor For Uninterruptable Power Systems Including A Static Bypass Grant 3,714,452 - Williamson January 30, 1 | 1973-01-30 |
| Inverter Starting Circuit Grant 3,631,332 - Williamson December 28, 1 | 1971-12-28 |
| Circuit For Keeping The Frequency Of An Inverter Synchronized With The Frequency Of Another Source Grant 3,614,461 - Speer , et al. October 19, 1 | 1971-10-19 |
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