Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811319 | Multi-disk player system | Yuji Ikedo, Takahiro Okajima, Masahiko Miyake | 1989-03-07 |
| 4809252 | Multi-disk player system | Yuji Ikedo, Takahiro Okajima, Masahiko Miyake | 1989-02-28 |