Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703723 | Optical system comprising graded refractive index lens element | — | 1997-12-30 |
| 5610766 | Zooming lens system | Takanori Yamanashi | 1997-03-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703723 | Optical system comprising graded refractive index lens element | — | 1997-12-30 |
| 5610766 | Zooming lens system | Takanori Yamanashi | 1997-03-11 |