Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890288 | Light quantity control device | Toshihiko Inuyama, Junichi Kimizuka, Kaoru Sato, Takashi Soya | 1989-12-26 |
AK
Akihisa Kusano
Overall (1989): #134,639 of 140,708Top 100%
1
Patents 1989