Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6532920 | Multipositional lift rocker arm assembly | Matthew Byrne Diggs | 2003-03-18 |
| 5640941 | Internal combustion engine with stratified charge and tumble motion | David J. Hazen | 1997-06-24 |
| 5544626 | Finger follower rocker arm with engine valve deactivator | Matthew Bryne Diggs | 1996-08-13 |
| 5401001 | Internal combustion engine exhaust control valve | John E. Cook, Gary Everingham, David J. Hazen, William C. Gillier | 1995-03-28 |
| 5309880 | Dual induction system for internal combustion engine having splayed intake passages | Richard Salvatore Mazzella, William Francis Stockhausen | 1994-05-10 |