Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883741 | Information recording medium | Younosuke Takahashi | 1989-11-28 |
TK
Takayuki Kuriyama
Overall (1989): #53,096 of 140,708Top 40%
1
Patents 1989