Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890138 | Image forming apparatus having a plurality of developing devices | Hirohisa Miyamoto | 1989-12-26 |
| 4866474 | Copying apparatus capable of forming a composite image of an outline image and a normal image | Toshikazu Higashi, Yasuyuki Matsuuchi, Yoshihiko Hatta, Masazumi Ito | 1989-09-12 |