Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825841 | Diagnosis device for an internal combustion engine exhaust gas recycling device | Mamoru Yoshioka, Hidemi Ohnaka | 1989-05-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825841 | Diagnosis device for an internal combustion engine exhaust gas recycling device | Mamoru Yoshioka, Hidemi Ohnaka | 1989-05-02 |