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Guochao Chu

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  • Beijing, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Liquid replenishing device
    • Patent number 9,275,880
    • Issue date Mar 1, 2016
    • Beijing Sevenstar Electronics Co., Ltd.
    • Guochao Chu
    • B08 - CLEANING

Patents Applicationslast 30 patents

  • Information Patent Application

    LIQUID REPLENISHING DEVICE
    • Publication number 20140305515
    • Publication date Oct 16, 2014
    • Guochao Chu
    • B08 - CLEANING