Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668776 | Deactivation roller hydraulic valve lifter | Nick J. Hendriksma | 2003-12-30 |
| 6578535 | Valve-deactivating lifter | Albert C. Stone, Carl R. Kangas | 2003-06-17 |
| 6513470 | Deactivation hydraulic valve lifter | Nick J. Hendriksma | 2003-02-04 |