TREA

Ram-ploughs

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Industry

  • CPC
  • E21C27/35
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C27/00Machines which completely free the mineral from the seam

Current Industry

E21C27/35Ram-ploughs
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Plough for underground mining
    • Patent number 7,314,253
    • Issue date Jan 1, 2008
    • DBT GmbH
    • Uwe Tillessen
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Coal plane with chain operated turning head
    • Patent number 4,141,593
    • Issue date Feb 27, 1979
    • Halbach and Braun
    • Ernst Braun
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3804465
    • Patent number 3,804,465
    • Issue date Apr 16, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3151912
    • Patent number 3,151,912
    • Issue date Oct 6, 1964
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    Plough for underground mining
    • Publication number 20050151412
    • Publication date Jul 14, 2005
    • DBT GmbH
    • Uwe Tillessen
    • E21 - EARTH DRILLING MINING