Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884869 | Fly's eye lens unit for illumination system | — | 1989-12-05 |
| 4878745 | Optical system for effecting increased irradiance in peripheral area of object | Kenji Endo, Shinichi Nagata | 1989-11-07 |