Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882030 | Air-fuel ratio detection system for engine exhaust gas | Seikoo Suzuki, Takao Sasayama, Minoru Osuga, Yoshishige Oyama | 1989-11-21 |
| 4803866 | Air-fuel ratio detecting device | Seikou Suzuki | 1989-02-14 |
| 4799018 | Air fuel ratio measuring system | Norio Ichikawa, Takayuki Itsuji | 1989-01-17 |