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Patents Grantslast 30 patents

  • Information Patent Grant

    Hybrid type fiber filtering apparatus
    • Patent number 9,352,254
    • Issue date May 31, 2016
    • DOOSAN HEAVY INDUSTRIES & CONSTRUCTION DO., LTD.
    • Woo Nyoung Lee
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE