Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847816 | Audio information reproducing apparatus | Yasunari Kawahara | 1989-07-11 |
HK
Hideyo Kamiyama
Overall (1989): #105,223 of 140,708Top 75%
1
Patents 1989