Seiichi Nakaya

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Itoigawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Demolition agent for demolishing brittle materials
- Patent number 4,477,284
- Issue date Oct 16, 1984
- Denki Kagaku Kogyo Kabushiki Kaisha
- Jun Isogai
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES