YS

Yasuo Sakaki

HC Hitachi Construction Machinery Co.: 2 patents #502 of 1,234Top 45%
📍 Ibaraki, JP: #3,280 of 6,779 inventorsTop 50%
Overall (All Time): #2,352,211 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
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