YM

Yoshiro Matsumoto

SI Sumitomo Metal Industries: 1 patents #16 of 89Top 20%
Overall (1989): #40,798 of 140,708Top 30%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

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