Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811151 | Shutter assembled disc cartridge | Yoshiyuki Nakamori, Tadahiro Kuwa, Nobuyuki Fujimoto, Shinichi Abe | 1989-03-07 |
| 4799123 | Disc cartridge | Haruo Arai, Tadahiro Kuwa | 1989-01-17 |