Takeji Okada

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Resin-coated aggregates
- Patent number 4,873,145
- Issue date Oct 10, 1989
- Shimitzu Construction Co., Ltd.
- Takeji Okada
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES