Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854292 | Ignition system for internal combustion engine | Noriyoshi Urushiwara, Noboru Sugiura, Ryoichi Kobayashi | 1989-08-08 |
| 4836176 | Ignition apparatus of electronic distribution type for multi-cylinder internal combustion engine | Noboru Sugiura, Ryoichi Kobayashi | 1989-06-06 |