Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886082 | Cleaning apparatus | Hisahito Kanasashi | 1989-12-12 |
| 4876917 | Torque variation absorbing device | Shigetaka Aiki, Kiyonori Kobayashi | 1989-10-31 |
| 4857032 | Torque variation absorbing device | Shigetaka Aiki, Kiyonori Kobayashi | 1989-08-15 |