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Hans DE Haas

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  • Meerbusch, DT
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of making iron powder
    • Patent number 3,975,186
    • Issue date Aug 17, 1976
    • Mannesmann Aktiengesellschaft
    • Klaus Grebe
    • B22 - CASTING POWDER METALLURGY