TREA

Gottfried Siebenhofer

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  • Vienna, AT
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Patents Grantslast 30 patents

  • Information Patent Grant

    Device for protecting selective cutting machines against overload
    • Patent number 6,257,671
    • Issue date Jul 10, 2001
    • Tamrock Voest-Alpine Bergtechnik Gesellschaft m.b.H.
    • Gottfried Siebenhofer
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Bit holder with a detachably fixed bit bushing
    • Patent number 5,498,069
    • Issue date Mar 12, 1996
    • Voest-Alpine Bergtechnik Gesellschaft m.b.H.
    • Gottfried Siebenhofer
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Apparatus for cutting rock
    • Patent number 4,555,143
    • Issue date Nov 26, 1985
    • Voest-Alpine Aktiengesellschaft
    • Herwig Wrulich
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulic mine prop
    • Patent number 4,404,893
    • Issue date Sep 20, 1983
    • Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesell...
    • Siegfried Sigott
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Valve arrangement for controlling the stroke of a telescoping prop
    • Patent number 4,344,354
    • Issue date Aug 17, 1982
    • Voest-Alpine Aktiengesellschaft
    • Heinrich Suessenbeck
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Mine roof supporting structure
    • Patent number 4,299,517
    • Issue date Nov 10, 1981
    • Voest-Alpine Aktiengesellschaft
    • Gottfried Siebenhofer
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Shield-carrying roof support unit
    • Patent number 4,197,035
    • Issue date Apr 8, 1980
    • Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesell...
    • Gottfried Siebenhofer
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Swivel mechanism for kerf-cutting machines
    • Patent number 4,147,391
    • Issue date Apr 3, 1979
    • Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesell...
    • Gottfried Siebenhofer
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pressure relief valve for hydraulic mine supporting elements
    • Patent number 4,111,227
    • Issue date Sep 5, 1978
    • Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesell...
    • Siegfried Sigott
    • E21 - EARTH DRILLING MINING