Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5602615 | Photometric device to determine a correct photometric value of a spot photometric region | Shinichi Tsukada | 1997-02-11 |
| 5592256 | Photometry device for a camera | — | 1997-01-07 |