Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4337537 | Tonearm position setting device | — | 1982-06-29 |
| 4204687 | Tone arm drive device | Shizuo Inaba | 1980-05-27 |
YH
Yoshihisa Hirota
Overall (All Time): #2,367,093 of 4,157,543Top 60%
2
Patents All Time