Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884100 | Density measuring device for originals in an enlarging/reducing projector | Yuji Hayashi | 1989-11-28 |
| 4816875 | Slit illumination system for copying machine and the like | Katsuhiko Takeda, Kazuyuki Yoshida | 1989-03-28 |