Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4354756 | Copying apparatus | Ryota Ogawa, Michiro Ohishi | 1982-10-19 |
| 4333711 | Zoom lens for copying | Takayuki Itoh, Ryota Ogawa | 1982-06-08 |
| 4322159 | Variable magnification type copying machine | Sataro Takahashi, Ryota Ogawa | 1982-03-30 |