Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4817877 | Shredding machine | Tetsuya Itoh, Shougo Iwai | 1989-04-04 |
SY
Shizuo Yoshikawa
Overall (1989): #56,433 of 140,708Top 45%
1
Patents 1989