Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884547 | Air/fuel ratio control system for internal combustion engine with variable control characteristics depending upon precision level of control parameter data | — | 1989-12-05 |
| 4873641 | Induction volume sensing arrangement for an internal combustion engine or the like | Hatsuo Nagaishi, Yasuo Seimiya, Hiromichi Miwa, Hiroshi Sanbuichi, Masaaki Uchida +1 more | 1989-10-10 |