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Bernard F. Kieffer

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  • Huntsville, AL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Recovery of niobium metal
    • Patent number 5,322,548
    • Issue date Jun 21, 1994
    • Teledyne Industries, Inc.
    • Bernard F. Kieffer
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...