Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882635 | Rotating drum device for a VCR in which the position of the magnetic head is controlled by a magnetic positioning device | — | 1989-11-21 |
YS
Yukiharu Sanai
Overall (1989): #39,371 of 140,708Top 30%
1
Patents 1989