TREA

comprising a fluid cushion

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Industry

  • CPC
  • E21D15/566
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D15/00Props Chocks

Current Industry

E21D15/566comprising a fluid cushion
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Support column for use in a mine
    • Patent number 5,484,130
    • Issue date Jan 16, 1996
    • Bochumer Eisenhutte Heintzmann GmbH & Co. KG
    • Lothar Domanski
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents