Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874233 | Diaphragm control device for interchangeable lens | Hiroshi Yamomoto, Shigeru Yoshida | 1989-10-17 |
KY
Katumi Yoshida
Overall (1989): #89,308 of 140,708Top 65%
1
Patents 1989