TREA

Ryoji Yamamoto

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  • Shimane, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Low thermal expansion cast alloy
    • Patent number 4,832,908
    • Issue date May 23, 1989
    • NEC Corporation
    • Katsuhisa Ishikawa
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...