YN

Yutaka Naganawa

NC Nippon Kokan Co.: 1 patents #290 of 735Top 40%
Overall (All Time): #4,034,827 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4450018 Fused flux for inclined submerged arc welding Katsuyuki Suga, Toyofumi Kitada, Hirotaka Nakagawa 1984-05-22