Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831402 | Camera with changeable focal length | Yoshihiro Fujita, Takao Umetsu, Minoru Takahashi | 1989-05-16 |
YM
Ysuyoshi Masaoka
Overall (1989): #38,045 of 140,708Top 30%
1
Patents 1989