TREA

Helmut Gradenegger

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  • Zeltweg, AT
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Patents Grantslast 30 patents

  • Information Patent Grant

    Installation for shifting won minerals
    • Patent number 5,193,295
    • Issue date Mar 16, 1993
    • Voest-Alpine Bergtechnik Gesellschaft m.b.H.
    • Helmut Gradenegger
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Conveying means for removing a heap of debris
    • Patent number 4,594,047
    • Issue date Jun 10, 1986
    • Voest-Alpine Aktiengesellschaft
    • Eduard Krivec
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING