Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6564772 | Injector tip for an internal combustion engine | Wen Ye | 2003-05-20 |
| 5603512 | Side and gap sealed oil ring | Keith E. Lawrence, Donald J. Waldman, Ross Paul Wietharn | 1997-02-18 |
| 5564699 | Side and gap sealed oil ring | Keith E. Lawrence, Donald J. Waldman, Ross Paul Wietharn | 1996-10-15 |
| RE35303 | Apparatus for adjustably controlling valve movement and fuel injection | Charles R. Miller, J. Roger Weber | 1996-07-30 |
| 5237968 | Apparatus for adjustably controlling valve movement and fuel injection | Charles R. Miller, J. Roger Weber | 1993-08-24 |
| 5237976 | Engine combustion system | Keith E. Lawrence | 1993-08-24 |