Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851872 | Developing device with developer sleeve facilitating developer supply adjustment by bristle height regulating member | Hiroshi Mizuno, Akihito Ikegawa, Kouichi Etou | 1989-07-25 |
| 4819027 | Developing apparatus | Hiroshi Mizuno, Akihito Ikegawa, Kouichi Etou | 1989-04-04 |
| 4809034 | Developing device | Hiroshi Mizuno, Akihito Ikegawa, Kouichi Etou | 1989-02-28 |