Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889416 | Finite distance zoom lens | — | 1989-12-26 |
YY
Yu Yamada
Overall (1989): #39,188 of 140,708Top 30%
1
Patents 1989