TREA

Rock dusters

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Industry

  • CPC
  • E21F5/146
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS E21F5/00Means or methods for preventing, binding, depositing, or removing dust Preventing explosions or fires

Current Industry

E21F5/146Rock dusters
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    2102006
    • Patent number 2,102,006
    • Issue date Dec 14, 1937
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1873161
    • Patent number 1,873,161
    • Issue date Aug 23, 1932
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1568281
    • Patent number 1,568,281
    • Issue date Jan 5, 1926
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1539091
    • Patent number 1,539,091
    • Issue date May 26, 1925
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1476624
    • Patent number 1,476,624
    • Issue date Dec 4, 1923
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1459677
    • Patent number 1,459,677
    • Issue date Jun 19, 1923
    • E21 - EARTH DRILLING MINING