Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872069 | Electric power supply control device for camera | Yutaka Ohsawa | 1989-10-03 |
| 4831400 | Stop-down signal adjusting circuit in automatic aperture control camera | Yutaka Ohsawa | 1989-05-16 |
| 4806748 | Photo-electric conversion circuit | Yutaka Ohsawa | 1989-02-21 |