Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808463 | Substrate for magnetic disks | Matsuda Osamu | 1989-02-28 |
OY
Okabayashi Yoshikatsu
Overall (1989): #139,552 of 140,708Top 100%
1
Patents 1989