TREA

with additional means for cutting the mineral into blocks

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Industry

  • CPC
  • E21C27/08
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Parent Industries

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

Current Industry

E21C27/08with additional means for cutting the mineral into blocks
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Lump breaker for mining machine
    • Patent number 9,140,120
    • Issue date Sep 22, 2015
    • Joy MM Delaware, Inc.
    • Edward F. Niederriter
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drum coal cutting machine having a roller crusher
    • Patent number 3,945,680
    • Issue date Mar 23, 1976
    • Gebr. Eickhoff, Maschinenfabrik und Eisengiesserei m.b.H.
    • Friedhelm Henrich
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3907367
    • Patent number 3,907,367
    • Issue date Sep 23, 1975
    • 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

    2390562
    • Patent number 2,390,562
    • Issue date Dec 11, 1945
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2359556
    • Patent number 2,359,556
    • Issue date Oct 3, 1944
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1735583
    • Patent number 1,735,583
    • Issue date Nov 12, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1706961
    • Patent number 1,706,961
    • Issue date Mar 26, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1678821
    • Patent number 1,678,821
    • Issue date Jul 31, 1928
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    1675723
    • Patent number 1,675,723
    • Issue date Jul 3, 1928
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1518809
    • Patent number 1,518,809
    • Issue date Dec 9, 1924
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1510628
    • Patent number 1,510,628
    • Issue date Oct 7, 1924
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1340731
    • Patent number 1,340,731
    • Issue date May 18, 1920
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1333627
    • Patent number 1,333,627
    • Issue date Mar 16, 1920
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1330744
    • Patent number 1,330,744
    • Issue date Feb 10, 1920
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1330743
    • Patent number 1,330,743
    • Issue date Feb 10, 1920
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    LUMP BREAKER FOR MINING MACHINE
    • Publication number 20140084666
    • Publication date Mar 27, 2014
    • Edward F. Niederriter
    • E21 - EARTH DRILLING MINING