TREA

John F. McGraw

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  • Sinking Spring, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hot work tool steel with good temper resistance
    • Patent number 4,886,640
    • Issue date Dec 12, 1989
    • Carpenter Technology Corporation
    • Harrison A. Garner
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...