Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878076 | Exposure controlling system and interchangeable lens therefor | Nobuyuki Taniguchi, Toshihiko Karasaki, Hiromu Mukai, Tokuji Ishida | 1989-10-31 |
| 4846562 | Zoom lens system | Shuji Ogino | 1989-07-11 |
| 4844600 | Zoom lens system | — | 1989-07-04 |
| 4806003 | Inverted-telephoto type wide angle lens system | Hiromu Mukai | 1989-02-21 |