Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839758 | Magnetic disk cartridge loading-and-unloading device | — | 1989-06-13 |
| 4656790 | Burnishing method and apparatus for magnetic disk | Kazuo Mukai, Shuji Nakata | 1987-04-14 |