TREA

the props being pre-loaded

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Industry

  • CPC
  • E21D15/586
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Parent Industries

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

Current Industry

E21D15/586the props being pre-loaded
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    3490244
    • Patent number 3,490,244
    • Issue date Jan 20, 1970
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3422864
    • Patent number 3,422,864
    • Issue date Jan 21, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3371901
    • Patent number 3,371,901
    • Issue date Mar 5, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3260492
    • Patent number 3,260,492
    • Issue date Jul 12, 1966
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3238847
    • Patent number 3,238,847
    • Issue date Mar 8, 1966
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    3148714
    • Patent number 3,148,714
    • Issue date Sep 15, 1964
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2973178
    • Patent number 2,973,178
    • Issue date Feb 28, 1961
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2820415
    • Patent number 2,820,415
    • Issue date Jan 21, 1958
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    2816728
    • Patent number 2,816,728
    • Issue date Dec 17, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2729946
    • Patent number 2,729,946
    • Issue date Jan 10, 1956
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2691503
    • Patent number 2,691,503
    • Issue date Oct 12, 1954
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1964003
    • Patent number 1,964,003
    • Issue date Jun 26, 1934
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    1880090
    • Patent number 1,880,090
    • Issue date Sep 27, 1932
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents