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Hongbo LIU

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  • Lishui, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Concealed door closer
    • Patent number 9,145,726
    • Issue date Sep 29, 2015
    • Oubao Security Technology Co., Ltd.
    • Haojie Li
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

  • Information Patent Application

    CONCEALED DOOR CLOSER
    • Publication number 20140304942
    • Publication date Oct 16, 2014
    • Oubao Security Technology Co., Ltd.
    • Haojie LI
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES