YT

Yasunobu Tsutsumi

NM Nippon Steel & Sumitomo Metal: 1 patents #786 of 1,491Top 55%
Overall (All Time): #2,939,313 of 4,157,543Top 75%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9617690 Flash butt welding method of rail steel Kenji Saita, Hiroshi Fukuchi 2017-04-11