Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873940 | Image developing device | Toyoji Ishikawa, Toshio Kaneko, Shuichi Endo, Yoshihiro Ogata | 1989-10-17 |
| 4835565 | Image developing device for electrophotography | Shinzi Nagatsuna, Kinzi Saito, Hiroyuki Matsushiro, Michihito Ohashi | 1989-05-30 |