Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4486841 | Bending press | Katsumi Koyama, Tsuneo Kogure, Naoaki Itano, Yoshihiko Ohashi | 1984-12-04 |
| 4282738 | Method and apparatus for adjusting stroke length of a ram for presses | Katsumi Koyama | 1981-08-11 |