Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648652 | Optical focus evaluation and focus adjustment methods, focus evaluation and focus adjustment apparatus, and screen apparatus | Moriyasu Shirayanagi | 1997-07-15 |
| 5623553 | High contrast fingerprint image detector | — | 1997-04-22 |