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Hans W. Grasshoff

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  • Dortmund, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Arrangement for hot-rolling of metal workpieces
    • Patent number 4,420,960
    • Issue date Dec 20, 1983
    • Estel Hoesch Werke Aktiengesellschaft
    • Hans W. Grasshoff
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...