Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696368 | Method of and apparatus for recording and reproducing optical information | Koichi Yamazaki, Hiroaki Yoshida | 1997-12-09 |
| 5600621 | Laser output control device for an optical information recording and reproducing apparatus | Eiichi Nakamura, Koichi Yamazaki | 1997-02-04 |