Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4969429 | Lube oil control system for turbocharged rotary piston engine | John Bartel, Edward F. Drewniany | 1990-11-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4969429 | Lube oil control system for turbocharged rotary piston engine | John Bartel, Edward F. Drewniany | 1990-11-13 |