Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5628036 | Focus adjustment device and method | Shigeyuki Uchiyama, Toshimi Watanabe | 1997-05-06 |
| 5625849 | Focus state detection device and method | — | 1997-04-29 |
| 5604561 | Focus state detection device | Seiichi Yasukawa | 1997-02-18 |