Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821077 | Cleaner for toner fixing device | Mitsuaki Hayakawa, Kiyoo Kawate | 1989-04-11 |
| 4806979 | Duplex printing machine | Tsuneki Kobayashi, Kensei Hosoya, Shogo Nobumori, Mitsuaki Hayakawa | 1989-02-21 |
| 4796561 | Electrophotographic developing device having a shaped doctor board | Yasuo Takano, Junji Kobayashi, Masato Yamada, Toshimitsu Harada, Kensei Hosoya | 1989-01-10 |