Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886152 | Power transmission unit | — | 1989-12-12 |
| 4838119 | Differential gear assembly with viscous and friction clutch mechanisms | Osamu Ishikawa, Yukio Yuhashi | 1989-06-13 |
| 4805486 | Locking differential gear assembly | Makoto Hagiwara | 1989-02-21 |