YS

Yukio Shibayama

DK Denki Kagaku Kogyo: 1 patents #291 of 655Top 45%
Overall (All Time): #3,904,903 of 4,157,543Top 95%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4933013 Hydraulic material composition having high strength Etsuo Sakai, Kazuhiro Kaizaki, Yasuhito Fushii 1990-06-12