Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852985 | Illuminating device for microscopes | Tadafumi Fujihara, Yoshihiro Shimada, Chikara Nagano | 1989-08-01 |
| 4812039 | Schlieren optical device | Yoshihiro Shimada, Tadafumi Fujihara, Chikara Nagano | 1989-03-14 |