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Yukitoshi Yamada

Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
Overall (All Time): #2,160,903 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7265321 Welding equipment for consumable electrode Shigeki Yonemori, Mitsunori Akaishi, Yukinori Hirota, Tsutomu Naito, Mituo Miyata 2007-09-04
4937428 Consumable electrode type arc welding contact tip Minoru Yoshinaka, Chuji Kiuchi, Harumi Tokushige, Yoshikatsu Sakano, Katsumi Handa 1990-06-26