Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882722 | Front loading disk player | Ryo Matsuura, Nobuyuki Isobe | 1989-11-21 |
| 4845700 | Front loading disc player | Toshiaki Koizumi, Masatsugu Otaki, Masakazu Yamashita, Kenji Tanaka, Ryo Matsuura | 1989-07-04 |
| 4841518 | Clamping mechanism for information recording disk | Shinsaku Nozu, Masakazu Yamashita | 1989-06-20 |