Issued Patents All Time
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 (All Time): #3,729,339 of 4,157,543Top 90%
1
Patents All Time