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Dan LIU

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  • SHANDONG, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vacuum-aided toilet
    • Patent number 8,468,616
    • Issue date Jun 25, 2013
    • Shandong Huateng Environmental Protection Automation Co., Ltd
    • Bin Song
    • E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents

  • Information Patent Application

    VACUUM-AIDED TOILET
    • Publication number 20110252554
    • Publication date Oct 20, 2011
    • SHANDONG HUATENG ENVIRONMENTAL PROTECTION AUTOMATION CO., LTD.
    • Bin SONG
    • E03 - WATER SUPPLY SEWERAGE