MW

Masami Wada

HC Hitachi Construction Machinery Co.: 1 patents #1 of 8Top 15%
Overall (1982): #43,372 of 81,411Top 55%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4326736 Swivel joint for reverse circulation drill Hiroshi Kusumi 1982-04-27