TREA

Dawei Wang

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  • Perrysburg, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Oil pumping apparatus
    • Patent number 9,982,668
    • Issue date May 29, 2018
    • Yanan Liu
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    Oil pumping apparatus without a speed reducer
    • Publication number 20190242223
    • Publication date Aug 8, 2019
    • Shenzhen Longzhiyuan Technology Co., Ltd.
    • Yanan LIU
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    OIL PUMPING APPARATUS
    • Publication number 20180051688
    • Publication date Feb 22, 2018
    • Yanan Liu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FLEXIBLE BEAM VERTICAL PUMPING UNIT
    • Publication number 20160273323
    • Publication date Sep 22, 2016
    • Yanan Liu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...