Masaru Hayakawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Binder for dry sand mold and method of its usage
- Patent number 4,691,759
- Issue date Sep 8, 1987
- Nippon Petrochemicals Co., Ltd.
- Masaru Hayakawa
- B22 - CASTING POWDER METALLURGY