TREA

Anchoring arrangements

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Industry

  • CPC
  • E21C29/08
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C29/00Propulsion of machines for slitting or completely freeing the mineral from the seam

Current Industry

E21C29/08Anchoring arrangements
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Drive system having a pin drive chain for a cutting machine for und...
    • Patent number 5,931,540
    • Issue date Aug 3, 1999
    • DBT Deutsche Bergbau-Technik GmbH
    • Gerhard Merten
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mechanism for advancing continuous mining machine through mining cy...
    • Patent number 4,256,343
    • Issue date Mar 17, 1981
    • Fairchild Incorporated
    • Sigmund Black
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Device for guying a movable cutting machine
    • Patent number 4,087,132
    • Issue date May 2, 1978
    • Vereinigte Osterreichische Eisen- und Stahlwerke-Alpine Montan Aktiengesellsc...
    • Friedrich Ressler
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3858940
    • Patent number 3,858,940
    • Issue date Jan 7, 1975
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2848204
    • Patent number 2,848,204
    • Issue date Aug 19, 1958
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2598970
    • Patent number 2,598,970
    • Issue date Jun 3, 1952
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2566003
    • Patent number 2,566,003
    • Issue date Aug 28, 1951
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2523871
    • Patent number 2,523,871
    • Issue date Sep 26, 1950
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2454179
    • Patent number 2,454,179
    • Issue date Nov 16, 1948
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2311043
    • Patent number 2,311,043
    • Issue date Feb 16, 1943
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1765248
    • Patent number 1,765,248
    • Issue date Jun 17, 1930
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1583435
    • Patent number 1,583,435
    • Issue date May 4, 1926
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1519731
    • Patent number 1,519,731
    • Issue date Dec 16, 1924
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1473729
    • Patent number 1,473,729
    • Issue date Nov 13, 1923
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1439677
    • Patent number 1,439,677
    • Issue date Dec 19, 1922
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1419016
    • Patent number 1,419,016
    • Issue date Jun 6, 1922
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents