Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841509 | Apparatus and method for detecting focus error signal and tracking error signal in an optical disk system | Akira Saito | 1989-06-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841509 | Apparatus and method for detecting focus error signal and tracking error signal in an optical disk system | Akira Saito | 1989-06-20 |