Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803577 | Vertical magnetic recording system using rigid disk | Kazumasa Fukuda | 1989-02-07 |
| 4797765 | Thin film magnetic head having solder-bonded protective plate | Hiroshi Kanai | 1989-01-10 |