Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853747 | Copying apparatus exposure device | Minoru Yakubo, Yoshikazu Tamura, Mamoru Ogasawara | 1989-08-01 |
| 4849792 | Photosensitive material feeding apparatus used in a copying machine | Minoru Yakubo | 1989-07-18 |
| 4843431 | Exposure control and color correcting device | Minoru Yakubo | 1989-06-27 |
| 4843435 | Conveyor of a copying apparatus | Minoru Yakubo, Masanori Yokota, Hideharu Oshima | 1989-06-27 |