HK

Hiroshi Kusumi

HC Hitachi Construction Machinery Co.: 1 patents #1 of 8Top 15%
📍 Honjō, JP: #1 of 4 inventorsTop 25%
Overall (1982): #58,759 of 81,411Top 75%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4326736 Swivel joint for reverse circulation drill Masami Wada 1982-04-27