Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839764 | Disk mechanism in a disk player | Takahiro Okajima, Yasuyuki Tashiro | 1989-06-13 |
| 4811319 | Multi-disk player system | Takahiro Okajima, Masahiko Miyake, Tsutomu Miyakawa | 1989-03-07 |
| 4811324 | Double-sided disk player | Takahiro Okajima | 1989-03-07 |
| 4809252 | Multi-disk player system | Tsutomu Miyakawa, Takahiro Okajima, Masahiko Miyake | 1989-02-28 |