Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869701 | Electrical educational toy | Hiroyuki Kawai, Takeo Shibukawa | 1989-09-26 |
FM
Fujiyo Mandai
Overall (1989): #113,607 of 140,708Top 85%
1
Patents 1989