Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840491 | Rubber kneading method | Yoshiaki Hagiwara, Hiromi Ishida | 1989-06-20 |
TT
Takeyoshi Takahashi
Overall (1989): #52,252 of 140,708Top 40%
1
Patents 1989