Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6763797 | Engine oil system with variable displacement pump | David R. Staley, Alan W. Hayman | 2004-07-20 |
| 6601557 | Engine oil pump and balance shaft module | Alan W. Hayman, David R. Staley | 2003-08-05 |
| 4798306 | Fuel tank venting | Roy A. Giacomazzi | 1989-01-17 |
| 4774913 | Variable valve lift/timing mechanism | Douglas K. Mehaffey | 1988-10-04 |