Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884066 | Deterioration detector system for catalyst in use for emission gas purifier | Shigeru Miyata | 1989-11-28 |
TS
Toshiki Sawada
Overall (1989): #48,193 of 140,708Top 35%
1
Patents 1989