Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5046059 | Multiple disc player with mechanism for changing of discs | Susumu Yoshida, Kiyoshi Morikawa, Seiichio Matsuki | 1991-09-03 |
| 4841499 | Multi-disc player | Akira Takahashi, Masahiko Kawamura, Kiyoshi Morikawa, Sei Onishi | 1989-06-20 |
| 4492998 | Cassette tape recorder | Seiichiro Matsuki | 1985-01-08 |