Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887573 | Ignition timing adjusting apparatus for internal combustion engine | Yasuhiko Fujiwara, Atsunori Hashimoto, Shinsuke Nakazawa, Masami Nagano, Takeshi Atago | 1989-12-19 |
| 4808489 | Method of producing magnetic disc | Toshikazu Nishihara | 1989-02-28 |