YK

Yoshimitsu Koyama

NC Nhk Spring Co.: 1 patents #555 of 1,116Top 50%
📍 Kitakami, JP: #24 of 52 inventorsTop 50%
Overall (All Time): #2,738,743 of 4,157,543Top 70%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11065641 Coil spring manufacturing method and coil spring manufacturing device Mitsuhiro Sugiyama, Tatsuya Watanuki 2021-07-20