Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875203 | Tracking servo signal generating device for an optical disc | Kazuaki Obara, Michiyoshi Nagashima | 1989-10-17 |
YT
Yoshinari Takamura
Overall (1989): #40,190 of 140,708Top 30%
1
Patents 1989