Hitoshi Iwado

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Okayama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Carbon containing refractory
- Patent number 4,830,992
- Issue date May 16, 1989
- Shinagawa Refractories Co., Ltd.
- Kenji Ichikawa
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES