TREA

by closely adjacent cutter chains acting on the full working face

Follow

Industry

  • CPC
  • E21C27/26
This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

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

Current Industry

E21C27/26by closely adjacent cutter chains acting on the full working face
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Endless chains comprised of interdigitated link elements having a Y...
    • Patent number 4,717,206
    • Issue date Jan 5, 1988
    • The Cincinnati Mine Machinery Company
    • Lester J. Sterwerf
    • 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

    3116914
    • Patent number 3,116,914
    • Issue date Jan 7, 1964
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3050295
    • Patent number 3,050,295
    • Issue date Aug 21, 1962
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2939692
    • Patent number 2,939,692
    • Issue date Jun 7, 1960
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2926896
    • Patent number 2,926,896
    • Issue date Mar 1, 1960
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2879981
    • Patent number 2,879,981
    • Issue date Mar 31, 1959
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2872171
    • Patent number 2,872,171
    • Issue date Feb 3, 1959
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2867427
    • Patent number 2,867,427
    • Issue date Jan 6, 1959
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2858121
    • Patent number 2,858,121
    • Issue date Oct 28, 1958
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2853566
    • Patent number 2,853,566
    • Issue date Sep 23, 1958
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2832579
    • Patent number 2,832,579
    • Issue date Apr 29, 1958
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2818243
    • Patent number 2,818,243
    • Issue date Dec 31, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2801095
    • Patent number 2,801,095
    • Issue date Jul 30, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2798712
    • Patent number 2,798,712
    • Issue date Jul 9, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2798713
    • Patent number 2,798,713
    • Issue date Jul 9, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2798714
    • Patent number 2,798,714
    • Issue date Jul 9, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2798706
    • Patent number 2,798,706
    • Issue date Jul 9, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2798711
    • Patent number 2,798,711
    • Issue date Jul 9, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2795408
    • Patent number 2,795,408
    • Issue date Jun 11, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2776127
    • Patent number 2,776,127
    • Issue date Jan 1, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2766030
    • Patent number 2,766,030
    • Issue date Oct 9, 1956
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2756038
    • Patent number 2,756,038
    • Issue date Jul 24, 1956
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2752143
    • Patent number 2,752,143
    • Issue date Jun 26, 1956
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2749105
    • Patent number 2,749,105
    • Issue date Jun 5, 1956
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2737378
    • Patent number 2,737,378
    • Issue date Mar 6, 1956
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2735667
    • Patent number 2,735,667
    • Issue date Feb 21, 1956
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2721067
    • Patent number 2,721,067
    • Issue date Oct 18, 1955
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2707099
    • Patent number 2,707,099
    • Issue date Apr 26, 1955
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2705626
    • Patent number 2,705,626
    • Issue date Apr 5, 1955
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    SOIL TRIMMING TOOL AND METHODS OF USING SAME
    • Publication number 20130255112
    • Publication date Oct 3, 2013
    • Darin R. Kruse
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Link and chain for rock cutting
    • Publication number 20070056425
    • Publication date Mar 15, 2007
    • Frank K. Bonar
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING