NA

Nobuyuki Akaguma

SI Sumitomo Heavy Industries: 1 patents #424 of 917Top 50%
Overall (All Time): #3,831,928 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5240398 Screw head structure Hiroyoshi Suumen, Atsushi Emoto 1993-08-31