Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5273134 | Oil consumption measurement system for internal combustion engine | Timothy A. Hegemier, John G. Spoonamore | 1993-12-28 |
| 4915069 | Metering valve stem seal | Kelly E. Duvall, Dean S. Bunce | 1990-04-10 |
| 4834037 | Unitary molded plastic valve seal | — | 1989-05-30 |