TREA

by both slitting and planing

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Industry

  • CPC
  • E21C27/18
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Parent Industries

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

Current Industry

E21C27/18by both slitting and planing
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Mineral mining installation with planer and jet carrier
    • Patent number 4,243,268
    • Issue date Jan 6, 1981
    • Gewerkschaft Eisenhutte Westfalia
    • Armin Lobbe
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3726563
    • Patent number 3,726,563
    • Issue date Apr 10, 1973
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3724901
    • Patent number 3,724,901
    • Issue date Apr 3, 1973
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3409329
    • Patent number 3,409,329
    • Issue date Nov 5, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3365234
    • Patent number 3,365,234
    • Issue date Jan 23, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3339981
    • Patent number 3,339,981
    • Issue date Sep 5, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3337269
    • Patent number 3,337,269
    • Issue date Aug 22, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2935310
    • Patent number 2,935,310
    • Issue date May 3, 1960
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2767969
    • Patent number 2,767,969
    • Issue date Oct 23, 1956
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1755332
    • Patent number 1,755,332
    • Issue date Apr 22, 1930
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1755700
    • Patent number 1,755,700
    • Issue date Apr 22, 1930
    • E21 - EARTH DRILLING MINING