Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808269 | Method for controlling an oxygen concentration sensing device | Tomohiko Kawanabe, Masahiko Asakura, Noritaka Kushida, Hiroshi Hasebe | 1989-02-28 |
TY
Tessho Yamada
Overall (1989): #51,241 of 140,708Top 40%
1
Patents 1989