Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4741577 | Double ranging drum cutter having load controller | Koji Sato, Hiroshi Kuroda, Ryuji Yamada | 1988-05-03 |
| 4715657 | Double ranging drum cutter having bedrock sensor based on video image processing system | Koji Sato, Hiroshi Kuroda, Ryuji Yamada | 1987-12-29 |