Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687693 | Hydraulically-actuated fuel injector with direct control needle valve | Gregory W. Hefler | 1997-11-18 |
| 5682858 | Hydraulically-actuated fuel injector with pressure spike relief valve | Gregory W. Hefler | 1997-11-04 |