Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882631 | Image reading device | Keisuke Murakami, Hiromasa Urata | 1989-11-21 |
| 4839514 | Optical reader with shading correcting means | Keisuke Murakami, Mamoru Tago, Hiromasa Urata | 1989-06-13 |