Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4681313 | Photosensitive paper conveying device of a copying machine | Yasuyuki Yokovama, Kiyoaki Nakamura, Hiroshi Goi | 1987-07-21 |
| 4557592 | Exposure-scanning apparatus | Yasuyuki YOKOYAMA, Takayoshi Hatano, Kenji Suzuki | 1985-12-10 |