TREA

with advancing shifting devices connected therewith

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Industry

  • CPC
  • E21D23/0052
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D23/00Mine roof supports for step- by- step movement

Current Industry

E21D23/0052with advancing shifting devices connected therewith
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Method and device for monitoring operation of a mining machine unit
    • Patent number 11,746,655
    • Issue date Sep 5, 2023
    • Caterpillar Inc.
    • Euan Kirkhope
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Advancing ram pin retention device
    • Patent number 9,963,966
    • Issue date May 8, 2018
    • Joy MM Delaware, Inc.
    • Richard Mather
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Apparatus for forming an underground tunnel
    • Patent number 9,631,491
    • Issue date Apr 25, 2017
    • Matthew Lumb
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mining system
    • Patent number 4,411,559
    • Issue date Oct 25, 1983
    • Aunald Jopling
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3883179
    • Patent number 3,883,179
    • Issue date May 13, 1975
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3855802
    • Patent number 3,855,802
    • Issue date Dec 24, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3855808
    • Patent number 3,855,808
    • Issue date Dec 24, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3856356
    • Patent number 3,856,356
    • Issue date Dec 24, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3851480
    • Patent number 3,851,480
    • Issue date Dec 3, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3812681
    • Patent number 3,812,681
    • Issue date May 28, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3800545
    • Patent number 3,800,545
    • Issue date Apr 2, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3702061
    • Patent number 3,702,061
    • Issue date Nov 7, 1972
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3677603
    • Patent number 3,677,603
    • Issue date Jul 18, 1972
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3592010
    • Patent number 3,592,010
    • Issue date Jul 13, 1971
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3576110
    • Patent number 3,576,110
    • Issue date Apr 27, 1971
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3550383
    • Patent number 3,550,383
    • Issue date Dec 29, 1970
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    3466875
    • Patent number 3,466,875
    • Issue date Sep 16, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3447327
    • Patent number 3,447,327
    • Issue date Jun 3, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3436922
    • Patent number 3,436,922
    • Issue date Apr 8, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3434292
    • Patent number 3,434,292
    • Issue date Mar 25, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3425229
    • Patent number 3,425,229
    • Issue date Feb 4, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3399927
    • Patent number 3,399,927
    • Issue date Sep 3, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3397543
    • Patent number 3,397,543
    • Issue date Aug 20, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3397544
    • Patent number 3,397,544
    • Issue date Aug 20, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3393522
    • Patent number 3,393,522
    • Issue date Jul 23, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3392533
    • Patent number 3,392,533
    • Issue date Jul 16, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3383865
    • Patent number 3,383,865
    • Issue date May 21, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3383868
    • Patent number 3,383,868
    • Issue date May 21, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3383866
    • Patent number 3,383,866
    • Issue date May 21, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3383867
    • Patent number 3,383,867
    • Issue date May 21, 1968
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents