Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684638 | Two-unit zoom lens system having high zoom ratio | Yasuji Ogata | 1997-11-04 |
| 5646787 | Zoom lens system | — | 1997-07-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684638 | Two-unit zoom lens system having high zoom ratio | Yasuji Ogata | 1997-11-04 |
| 5646787 | Zoom lens system | — | 1997-07-08 |