DO

Daisuke Oka

HC Hitachi Construction Machinery Tierra Co.: 2 patents #5 of 19Top 30%
Overall (2022): #166,393 of 548,613Top 35%
2
Patents 2022

Issued Patents 2022

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11332911 Construction machine Yoshifumi Takebayashi, Hajime Yoshida, Natsuki Nakamura 2022-05-17
11280059 Hydraulic drive system for construction machine Kazushige Mori, Hajime Yoshida, Yoshifumi Takebayashi, Natsuki Nakamura 2022-03-22