EH

Eiji Hirooka

SI Sumitomo Metal Industries: 1 patents #16 of 89Top 20%
📍 Koriyama, JP: #13 of 38 inventorsTop 35%
Overall (1989): #117,476 of 140,708Top 85%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4860416 Variable-crown roll Takeshi Masui, Yoshiro Matsumoto, Atsushi Tomizawa 1989-08-29