Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6758177 | Method and apparatus to control a variable valve system | Jeffrey M. Pfeiffer, Amanpal S. Grewal | 2004-07-06 |
| 6758179 | Method and apparatus for controlling a variable valve system for an internal combustion engine | Jeffrey M. Pfeiffer, Amanpal S. Grewal | 2004-07-06 |
| 6718921 | Method and apparatus for cleaning an oil control valve for an internal combustion engine | Amanpal S. Grewal, Daniel G. Gauthier, James P. Waters, Jeffrey M. Pfeiffer | 2004-04-13 |