Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4728374 | Solution heat treated engine poppet valves | Jay M. Larson, Lawrence F. Jenkins | 1988-03-01 |
| 4547229 | Solution heat treating of engine poppet valves | Jay M. Larson, Lawrence F. Jenkins | 1985-10-15 |