Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4534268 | Hydraulic fluid circuit of hydraulic shovel | Takashi Yagyu, Takeshi Yamaguchi, Sotaro Tanaka | 1985-08-13 |
| 4504185 | Hydraulic circuit of hydraulic power shovel | Takashi Yagyu, Takeshi Yamaguchi, Sotaro Tanaka | 1985-03-12 |