Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847816 | Audio information reproducing apparatus | Hideyo Kamiyama | 1989-07-11 |
YK
Yasunari Kawahara
Overall (1989): #42,101 of 140,708Top 30%
1
Patents 1989