Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819603 | System and method for controlling ignition timing for an internal combustion engine | Terufumi Hidaka, Yuichi Kashimura | 1989-04-11 |
| 4819171 | Engine spark timing control system | — | 1989-04-04 |