Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855740 | Keyboard | Kenzaburou Iijima, Yoshinori Hayashi | 1989-08-08 |
TM
Toshihiro Muramatsu
Overall (1989): #48,504 of 140,708Top 35%
1
Patents 1989