Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886256 | Vehicle suspension device with a coil spring embedded in an open cell foam | Masakazu Nishiyama, Hideo Yamamoto | 1989-12-12 |
| 4880213 | Gas spring apparatus | Ichiro Takadera, Kohei Taguchi | 1989-11-14 |
| 4828231 | Car suspension system | Takeo Fukumura, Nobuya Ezure | 1989-05-09 |