Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883643 | Oxygen sensor protected against contaminants | Hisaharu Nishio | 1989-11-28 |
TO
Toshio Okumura
Overall (1989): #48,307 of 140,708Top 35%
1
Patents 1989