Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11232892 | Coil and method for manufacturing coil | Hiromu Shiota, Eiji Shimomura, Hiroshi Goto, Teruhiko Maeda, Yuusuke Shima | 2022-01-25 |
| 4702024 | Helical dredge cutter head with scoop-in plates | Toyoaki Shiba, Seiichi Goto | 1987-10-27 |
| 4370856 | Control method for winch of mining machinery | Ryuji Yamada | 1983-02-01 |