Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860271 | Servo circuit for generating a tracking error signal for optical disk player | Fumihiko Yokogawa, Hiroyuki Hirano | 1989-08-22 |
AM
Akira Motoyama
Overall (1989): #134,571 of 140,708Top 100%
1
Patents 1989