Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854557 | Air springs | Norio Goshima | 1989-08-08 |
| 4835752 | Device for driving and controlling optical head for use in optical disk system | Keiji Nakatsu, Shigeo Hayashi, Masaharu Ogawa, Osamu Itou, Kunimaro Tanaka | 1989-05-30 |
| 4807858 | Air springs | Yasushi Fujihira | 1989-02-28 |