TREA

Courtland Joshua Helbig

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  • Morgantown, WV, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Adjustable mine ventilation system and method
    • Patent number 10,443,381
    • Issue date Oct 15, 2019
    • GMS Mine Repair and Maintenance, Inc.
    • Courtland Joshua Helbig
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Mine ventilation system and method
    • Patent number 9,759,065
    • Issue date Sep 12, 2017
    • GMS MINE REPAIR AND MAINTENANCE, INC.
    • Courtland Joshua Helbig
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Cleaning vehicle, vehicle system and method
    • Patent number 9,200,423
    • Issue date Dec 1, 2015
    • GMS Mine Repair and Maintenance, Inc.
    • Courtland Joshua Helbig
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents