YH

Yoichi Hirokawa

TK Tokyo Keiki: 1 patents #1 of 3Top 35%
📍 Kamakura, JP: #18 of 90 inventorsTop 20%
Overall (1982): #22,200 of 81,411Top 30%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4336594 Automatic steering apparatus for ships Isao Masuzawa, Kanshi Yamamoto 1982-06-22