Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881013 | Flash photographic apparatus | Hiroyuki Kataoka | 1989-11-14 |
| 4808811 | Light integrating circuit for use in a light measuring device which is accurate for both low and high light values | Hiroyuki Kataoka, Kouichi Ohmori | 1989-02-28 |