Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855783 | Agitating roller and restricting member for a developing device | Noboru Sawayama | 1989-08-08 |
| 4814821 | Image-forming device | Noboru Sawayama, Shinichi Kamiyama, Hideo Yuh, Tadayuki Sekiya | 1989-03-21 |