Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4994855 | Electrophotographic image formation apparatus with two bias voltage sources | Kunio Ohashi, Shiro Narikawa, Shoichi Nagata, Kazuki Wakita, Takashi Hayakawa | 1991-02-19 |