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  • CPC
  • E21F13/065
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS E21F13/00Transport specially adapted to underground conditions

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E21F13/065Scrapers
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Mine mining system
    • Patent number 10,352,165
    • Issue date Jul 16, 2019
    • Komatsu Ltd.
    • Yuichi Kodama
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3731976
    • Patent number 3,731,976
    • Issue date May 8, 1973
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3269566
    • Patent number 3,269,566
    • Issue date Aug 30, 1966
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2901134
    • Patent number 2,901,134
    • Issue date Aug 25, 1959
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2435669
    • Patent number 2,435,669
    • Issue date Feb 10, 1948
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2414412
    • Patent number 2,414,412
    • Issue date Jan 14, 1947
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2403817
    • Patent number 2,403,817
    • Issue date Jul 9, 1946
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2391584
    • Patent number 2,391,584
    • Issue date Dec 25, 1945
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2294911
    • Patent number 2,294,911
    • Issue date Sep 8, 1942
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    2195544
    • Patent number 2,195,544
    • Issue date Apr 2, 1940
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2147093
    • Patent number 2,147,093
    • Issue date Feb 14, 1939
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2113760
    • Patent number 2,113,760
    • Issue date Apr 12, 1938
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2075505
    • Patent number 2,075,505
    • Issue date Mar 30, 1937
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2051629
    • Patent number 2,051,629
    • Issue date Aug 18, 1936
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1962274
    • Patent number 1,962,274
    • Issue date Jun 12, 1934
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1958874
    • Patent number 1,958,874
    • Issue date May 15, 1934
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1902457
    • Patent number 1,902,457
    • Issue date Mar 21, 1933
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1900189
    • Patent number 1,900,189
    • Issue date Mar 7, 1933
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1862610
    • Patent number 1,862,610
    • Issue date Jun 14, 1932
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1838214
    • Patent number 1,838,214
    • Issue date Dec 29, 1931
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1826199
    • Patent number 1,826,199
    • Issue date Oct 6, 1931
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1823148
    • Patent number 1,823,148
    • Issue date Sep 15, 1931
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1791665
    • Patent number 1,791,665
    • Issue date Feb 10, 1931
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1765525
    • Patent number 1,765,525
    • Issue date Jun 24, 1930
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1742026
    • Patent number 1,742,026
    • Issue date Dec 31, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1723383
    • Patent number 1,723,383
    • Issue date Aug 6, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1702558
    • Patent number 1,702,558
    • Issue date Feb 19, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1701174
    • Patent number 1,701,174
    • Issue date Feb 5, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1697322
    • Patent number 1,697,322
    • Issue date Jan 1, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1692823
    • Patent number 1,692,823
    • Issue date Nov 27, 1928
    • E21 - EARTH DRILLING MINING