Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831402 | Camera with changeable focal length | Yoshihiro Fujita, Ysuyoshi Masaoka, Minoru Takahashi | 1989-05-16 |
TU
Takao Umetsu
Overall (1989): #52,080 of 140,708Top 40%
1
Patents 1989