Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870439 | Focal length varying device for camera | Isao Nakazawa, Hiroshi Maeno, Yasuhiko Shiomi | 1989-09-26 |
| 4862202 | Magnification change-over device for camera | Isao Nakazawa, Yoshihiro Harunari, Yasuhisa Sato, Yasuyuki Yamada | 1989-08-29 |
| 4827303 | Distance measuring device | — | 1989-05-02 |
| 4811041 | Magnification change-over device for camera | — | 1989-03-07 |