Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4582032 | Ignition timing control system for internal combustion engine | Youichi Hara | 1986-04-15 |
| 4552104 | Crankshaft of V-6 internal combustion engine | Kenjiro Hara | 1985-11-12 |