Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834031 | Variable compression-ratio control device for an internal combustion engine | Kenji Katoh, Eiji Iwasaki | 1989-05-30 |
| 4830517 | Device for locking rotation of an eccentric bearing of a compression ratio changing device | Eiji Iwasaki | 1989-05-16 |