Hirotoshi Hagiwara

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Nishi-kubiki-gun, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing a concrete product
- Patent number 6,126,875
- Issue date Oct 3, 2000
- Denki Kagaku Kogyo Kabushiki Kaisha
- Yoshiharu Watanabe
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES