Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851924 | Color recorder overhead projector with color recorder | Takuma Nakamura | 1989-07-25 |
| 4839731 | Color overhead projector | — | 1989-06-13 |
YS
Yasuhiko Saka
Overall (1989): #12,661 of 140,708Top 9%
2
Patents 1989