Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865434 | Zoom lens capable of selecting a focal length beyond a standard focal length range | Takashi Matsushita, Sadatoshi Takahashi, Nozomu Kitagishi, Tsunefumi Tanaka | 1989-09-12 |
| 4836661 | Optical system of variable magnification power | — | 1989-06-06 |
| 4830477 | Zoom lens capable of obtaining focal lengths beyond a variable focal length range | Sadatoshi Takahashi, Nozomu Kitagishi, Tsunefumi Tanaka, Takashi Matsushita, Kikuo Momiyama | 1989-05-16 |
| 4826301 | Photographic system having soft focus function | — | 1989-05-02 |
| 4804986 | Camera | Ichiro Ohnuki, Masaharu Eguchi | 1989-02-14 |