Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866619 | Method of controlling fuel in an engine | — | 1989-09-12 |
| 4823642 | Air-fuel ratio controlling apparatus of an engine with an automatic change gear of electronic control type | Ikuo Okamoto, Kenji Ushijima, Hiroshi Kinoshita | 1989-04-25 |