Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850219 | Method and apparatus for measuring the quantity of intake air based on the temperature variation caused by heat dissipation | Yoshishige Ohyama | 1989-07-25 |
| 4814045 | Method for detecting air-fuel ratio | Yoshishige Oyama | 1989-03-21 |