Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870456 | Developing-unit shifting apparatus with two speed cooling fan | Junji Watanabe, Hidetaka Nonami | 1989-09-26 |
| 4806968 | Drive unit for a copying machine | Junji Watanabe | 1989-02-21 |