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Robert W. Marshall

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  • DuBois, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for melting a charge of bulk solid metal
    • Patent number 4,484,947
    • Issue date Nov 27, 1984
    • North American Manufacturing Company
    • Robert W. Marshall
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...