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Johannes Dr/u/ ppel

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  • Oberhausen, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Heating system for steel casting ladles
    • Patent number 4,984,771
    • Issue date Jan 15, 1991
    • M.A.N. Maschinenfabrik Augsburg-Nuremberg AG
    • Johannes Druppel
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Slewing tower for ladles
    • Patent number 4,471,487
    • Issue date Sep 11, 1984
    • Rudolf Hoffmann
    • B22 - CASTING POWDER METALLURGY