TREA

having closed fluid system

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Industry

  • CPC
  • E21D15/45
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Parent Industries

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

Current Industry

E21D15/45having closed fluid system
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic shield support system and pressure intensifier
    • Patent number 11,396,894
    • Issue date Jul 26, 2022
    • Caterpillar Global Mining Europe GmbH
    • Oliver Dwornik
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Telescopic pumpable props
    • Patent number 9,140,026
    • Issue date Sep 22, 2015
    • Cougar Can Company Pty Ltd.
    • Craig Douglas Barnett
    • E04 - BUILDING
  • Information Patent Grant

    3281108
    • Patent number 3,281,108
    • Issue date Oct 25, 1966
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3281107
    • Patent number 3,281,107
    • Issue date Oct 25, 1966
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3180093
    • Patent number 3,180,093
    • Issue date Apr 27, 1965
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3119309
    • Patent number 3,119,309
    • Issue date Jan 28, 1964
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3055626
    • Patent number 3,055,626
    • Issue date Sep 25, 1962
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    3012404
    • Patent number 3,012,404
    • Issue date Dec 12, 1961
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2989001
    • Patent number 2,989,001
    • Issue date Jun 20, 1961
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    2981199
    • Patent number 2,981,199
    • Issue date Apr 25, 1961
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2959922
    • Patent number 2,959,922
    • Issue date Nov 15, 1960
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2954740
    • Patent number 2,954,740
    • Issue date Oct 4, 1960
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2895454
    • Patent number 2,895,454
    • Issue date Jul 21, 1959
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2713773
    • Patent number 2,713,773
    • Issue date Jul 26, 1955
    • 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

    2621631
    • Patent number 2,621,631
    • Issue date Dec 16, 1952
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2136080
    • Patent number 2,136,080
    • Issue date Nov 8, 1938
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    Telescopic Pumpable Props
    • Publication number 20150097099
    • Publication date Apr 9, 2015
    • Cougar Can Company Pty Ltd.
    • Craig Douglas Barnett
    • E04 - BUILDING