Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5354322 | Optical illumination system for endoscope | — | 1994-10-11 |
| 5331465 | Macro lens | — | 1994-07-19 |
| 5329400 | Focal length changeable lens | — | 1994-07-12 |
| 5285316 | Zoom lens | Nobuyuki Shirie | 1994-02-08 |