TREA

comprising helically running channels

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Industry

  • CPC
  • E21F13/047
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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

Current Industry

E21F13/047comprising helically running channels
Industries

Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    APPARATUS AND METHODS FOR HYDROCARBON RECOVERY
    • Publication number 20220098965
    • Publication date Mar 31, 2022
    • DRIFT RESOURCES TECHNOLOGIES INC.
    • D. Scott Morton
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Conveying Hose
    • Publication number 20170314708
    • Publication date Nov 2, 2017
    • CONTITECH SCHLAUCH GMBH
    • Steffen Wietzke
    • G01 - MEASURING TESTING