Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822711 | Electrostatic image-developing process using a magnetic roller | Masahiko Itaya, Hiroshi Fuma | 1989-04-18 |
| 4814818 | Developer layer forming apparatus | Hiroshi Fuma, Masahiko Itaya | 1989-03-21 |