Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814037 | Variable camshaft timing for internal combustion engine with actuator locking | Franklin R. Smith, Roger T. Simpson, Marty Gardner, Michael Duffield | 2004-11-09 |
| 6729283 | Externally mounted vacuum controlled actuator with position sensor control means to reduce functional and magnetic hysteresis | Roger T. Simpson | 2004-05-04 |