Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814239 | Vertical magnetic recording medium and method of manufacturing the same | Kazuo Inoue, Shizuka Yoshii, Iwao Okamoto | 1989-03-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814239 | Vertical magnetic recording medium and method of manufacturing the same | Kazuo Inoue, Shizuka Yoshii, Iwao Okamoto | 1989-03-21 |