Hisanori Yokoo

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Yokohama, JP

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Patents Grantslast 30 patents

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Method for producing asbestos free machinable calcium silicate high...
- Patent number 4,334,931
- Issue date Jun 15, 1982
- Nippon Asbestos Co., Ltd.
- Hiroshi Asaumi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES