YF

Yoshitsuga Fukukawa

SI Sumitomo Metal Industries: 1 patents #630 of 1,462Top 45%
Overall (All Time): #3,947,862 of 4,157,543Top 95%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4729502 Apparatus for treating ends of large-diameter welded pipe Atsushi Nishida, Mamoru Nishioka, Akio Takemori 1988-03-08