Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877006 | Air-fuel ratio control method for internal combustion engines | Kunio Noguchi, Kazushige Toshimits | 1989-10-31 |
| 4819604 | Fuel supply control method for internal combustion engines | Kiyoshi Tsukimura | 1989-04-11 |