Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331462 | Zoom lens having a long back focal length | — | 1994-07-19 |
| 5303087 | Retrofocus type lens | Shingo Hayakawa, Nozomu Kitagishi, Shouichi Yamazaki | 1994-04-12 |
| 5289317 | Compact zoom lens | Keiji Ikemori, Hiroki Nakayama | 1994-02-22 |