Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687401 | High variable-power ratio, high aperture ratio, zoom optical system | Atsushi Kawamura, Kazuyasu Ohashi | 1997-11-11 |
AO
Akiko Ozawa
Overall (1997): #179,710 of 185,788Top 100%
1
Patents 1997