Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888756 | Optical information recording and reproducing apparatus | Hideki Hosoya | 1989-12-19 |
| 4800546 | Optical information record/regenerating apparatus with device for prohibiting movement of optical head | Akio Aoki, Kazuo Minoura | 1989-01-24 |