Issued Patents 1982
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4354756 | Copying apparatus | Yasunori Arai, Michiro Ohishi | 1982-10-19 |
| 4348082 | Zoom lens having high zoom ratio including wide angle range | — | 1982-09-07 |
| 4333711 | Zoom lens for copying | Takayuki Itoh, Yasunori Arai | 1982-06-08 |
| 4331389 | Compact zoom lens system | Yasuo Takahashi | 1982-05-25 |
| 4322159 | Variable magnification type copying machine | Sataro Takahashi, Yasunori Arai | 1982-03-30 |