TREA

Machines for making slits with additional arrangements for drilling

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Industry

  • CPC
  • E21C25/66
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C25/00Cutting machines

Current Industry

E21C25/66Machines for making slits with additional arrangements for drilling
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Mining machine applicable to fluidized mining of ore bodies and min...
    • Patent number 11,261,732
    • Issue date Mar 1, 2022
    • CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
    • Yang Ju
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drilling and bursting heading machine
    • Patent number 10,233,755
    • Issue date Mar 19, 2019
    • China University of Mining and Technology
    • Songyong Liu
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method and apparatus for recovering subsurface free mercury and dec...
    • Patent number 9,381,552
    • Issue date Jul 5, 2016
    • Perma-Fix Environmental Services, Inc.
    • Gregory Edwards
    • B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
  • Information Patent Grant

    Method and apparatus for boring and shearing of rocks
    • Patent number 5,836,658
    • Issue date Nov 17, 1998
    • Dennis Mraz
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pre-bolting system for underground mines
    • Patent number 4,653,810
    • Issue date Mar 31, 1987
    • Roger F. J. Adam
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2334576
    • Patent number 2,334,576
    • Issue date Nov 16, 1943
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2302073
    • Patent number 2,302,073
    • Issue date Nov 17, 1942
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2218491
    • Patent number 2,218,491
    • Issue date Oct 15, 1940
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2218492
    • Patent number 2,218,492
    • Issue date Oct 15, 1940
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2166569
    • Patent number 2,166,569
    • Issue date Jul 18, 1939
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2165404
    • Patent number 2,165,404
    • Issue date Jul 11, 1939
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2015677
    • Patent number 2,015,677
    • Issue date Oct 1, 1935
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1984372
    • Patent number 1,984,372
    • Issue date Dec 18, 1934
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1984832
    • Patent number 1,984,832
    • Issue date Dec 18, 1934
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1978367
    • Patent number 1,978,367
    • Issue date Oct 23, 1934
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1933589
    • Patent number 1,933,589
    • Issue date Nov 7, 1933
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1920450
    • Patent number 1,920,450
    • Issue date Aug 1, 1933
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1878036
    • Patent number 1,878,036
    • Issue date Sep 20, 1932
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1707133
    • Patent number 1,707,133
    • Issue date Mar 26, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1690085
    • Patent number 1,690,085
    • Issue date Oct 30, 1928
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1482990
    • Patent number 1,482,990
    • Issue date Feb 5, 1924
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents