Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881013 | Flash photographic apparatus | Tosiyuki Kumakura | 1989-11-14 |
| 4845522 | Data communication system for camera system | — | 1989-07-04 |
| 4808811 | Light integrating circuit for use in a light measuring device which is accurate for both low and high light values | Tosiyuki Kumakura, Kouichi Ohmori | 1989-02-28 |
| 4806963 | Aperture decision system for flash photographing | Ryuichi Kobayashi, Yoshihito Harada, Masaharu Kawamura, Toshiyuki Kumakura | 1989-02-21 |