Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859051 | Eye testing apparatus | Ikuo Kitao, Yasuo Kato | 1989-08-22 |
| 4828385 | Autolensmeter | Akihiro Arai | 1989-05-09 |
| 4810085 | Corneal configuration measuring apparatus | Yoshinori Oana, Akihiro Arai | 1989-03-07 |
| 4796989 | Opthalmological measuring apparatus | Yoshinori Oana, Akihiro Arai | 1989-01-10 |