Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806979 | Duplex printing machine | Hiroyoshi Tokoro, Tsuneki Kobayashi, Shogo Nobumori, Mitsuaki Hayakawa | 1989-02-21 |
| 4796561 | Electrophotographic developing device having a shaped doctor board | Yasuo Takano, Hiroyoshi Tokoro, Junji Kobayashi, Masato Yamada, Toshimitsu Harada | 1989-01-10 |