Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671200 | Method for detecting the movement of a light beam and optical information reproduction apparatus using the same | Osamu Yamaguchi, Mitsuro Moriya, Hiroyuki Yamaguchi, Hiromichi Ishibashi | 1997-09-23 |