Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4322839 | Method and apparatus for recording and reproducing information on and from an optical disk | Tadaoki Yamashita, Takeo Ohta, Nobuo Akahira, Tatsushi Nakamura | 1982-03-30 |