KI

Koji Ishikawa

HC Hitachi Construction Machinery Co.: 1 patents #7 of 42Top 20%
Overall (1997): #117,083 of 185,788Top 65%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5673558 Hydraulic circuit system for hydraulic excavator Genroku Sugiyama, Toichi Hirata, Tsukasa Toyooka, Tsuyoshi Nakamura 1997-10-07