Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878130 | Reproduction apparatus | Katsuichi Shimizu, Toshiaki Yagasaki, Hisashi Sakamaki | 1989-10-31 |
| 4823192 | Reproduction apparatus | Katsuichi Shimizu, Toshiaki Yagasaki, Hisashi Sakamaki | 1989-04-18 |
| 4816868 | Image forming apparatus | Katsuichi Shimizu, Osamu Sawamura, Masahiro Tomosada, Hisashi Sakamaki | 1989-03-28 |
| 4811051 | Image forming device | Katsuichi Shimizu, Toshiaki Yagasaki, Hisashi Sakamaki | 1989-03-07 |