Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5313245 | Automatic focusing device | — | 1994-05-17 |
| 5298927 | Visual axis detecor having a high sensitivity to a light from an eye | Akihiko Nagano | 1994-03-29 |
| 5280312 | Visual axis detection apparatus | Akira Yamada, Akihiko Nagano | 1994-01-18 |