Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835754 | Tracking control device of an optical pick-up | Toshihiro Shigemori | 1989-05-30 |
KY
Kazutaka Yamamoto
Overall (1989): #89,374 of 140,708Top 65%
1
Patents 1989