Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5692486 | Air-fuel ratio sensor deterioration-detecting system for internal combustion engines | Kojiro Tsutsumi, Toshitaka Hachiro, Shigeto Kashiwabara, Fumio Hara, Sachito Fujimoto | 1997-12-02 |