Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834028 | Piston cooling system for a reciprocating piston internal combustion engine | — | 1989-05-30 |
HO
Hermann Oetting
Overall (1989): #106,406 of 140,708Top 80%
1
Patents 1989