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Josef Hefter

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  • Fenken, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Controlled deflection roll
    • Patent number 4,357,743
    • Issue date Nov 9, 1982
    • Escher Wyss Limited
    • Josef Hefter
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...