TREA

with one part resting on a supporting medium

Follow

Industry

  • CPC
  • E21D15/18
This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

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

Current Industry

E21D15/18with one part resting on a supporting medium
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Load support drum with resilient core member
    • Patent number 10,774,641
    • Issue date Sep 15, 2020
    • Micon
    • David A. Hussey
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Telescopic pumpable prop assembly with improved ceiling impact prop...
    • Patent number 10,240,458
    • Issue date Mar 26, 2019
    • Cougar Can Company PTY LTD
    • Craig Douglas Barnett
    • E04 - BUILDING
  • Information Patent Grant

    Yieldable prop with yieldable insert
    • Patent number 9,995,140
    • Issue date Jun 12, 2018
    • FCI Holdings Delaware, Inc.
    • Dakota Faulkner
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Telescopic mine roof support
    • Patent number 9,347,316
    • Issue date May 24, 2016
    • Burrell Mining Products, Inc.
    • Michael T. Shook
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Telescopic mine roof support
    • Patent number 8,851,805
    • Issue date Oct 7, 2014
    • Burrell Mining Products, Inc.
    • Michael T. Shook
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Yieldable mine roof support
    • Patent number 6,394,707
    • Issue date May 28, 2002
    • Jack Kennedy Metal Products and Buildings, Inc.
    • William R. Kennedy
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Support for underground mining and tunnel construction
    • Patent number 6,056,480
    • Issue date May 2, 2000
    • Theodor Kolk
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Prop for use in underground mining or tunnel construction
    • Patent number 5,921,718
    • Issue date Jul 13, 1999
    • Theodor Kolk
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Support column
    • Patent number 5,413,436
    • Issue date May 9, 1995
    • MBK-Hydraulik Meuwsen & Brockhausen GmbH
    • Volker Merz
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Support column
    • Patent number 5,273,378
    • Issue date Dec 28, 1993
    • Volker Merz
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Flexible telescopic prop for building materials
    • Patent number 5,240,354
    • Issue date Aug 31, 1993
    • Ingenieurtechnik GmbH & Co. KG
    • Heinrich Quante
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Elongated shoring device
    • Patent number 5,165,824
    • Issue date Nov 24, 1992
    • Dan M. Corcoran
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Self adjusting structure support
    • Patent number 4,726,714
    • Issue date Feb 23, 1988
    • Eugene D. MacArthur
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method and system for supporting a roof
    • Patent number 4,185,940
    • Issue date Jan 29, 1980
    • Klaus Spies
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Compressible mine support
    • Patent number 4,052,029
    • Issue date Oct 4, 1977
    • Mine Support Systems (Proprietary) Limited
    • Rodney C. Townsend
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3648960
    • Patent number 3,648,960
    • Issue date Mar 14, 1972
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2510688
    • Patent number 2,510,688
    • Issue date Jun 6, 1950
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    2175777
    • Patent number 2,175,777
    • Issue date Oct 10, 1939
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2029789
    • Patent number 2,029,789
    • Issue date Feb 4, 1936
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1895053
    • Patent number 1,895,053
    • Issue date Jan 24, 1933
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1765200
    • Patent number 1,765,200
    • Issue date Jun 17, 1930
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1049135
    • Patent number 1,049,135
    • Issue date Dec 31, 1912
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    969851
    • Patent number 969,851
    • Issue date Sep 13, 1910
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    881609
    • Patent number 881,609
    • Issue date Mar 10, 1908
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents