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Junhua Shen

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  • Shanghai, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Automatic bit-changing screwdriver
    • Patent number 9,186,783
    • Issue date Nov 17, 2015
    • Shanghai Kunjek Handtools and Hardware Co., Ltd.
    • Hao Wen
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

  • Information Patent Application

    AUTOMATIC HEAD-CHANGING SCREW DRIVER
    • Publication number 20140290448
    • Publication date Oct 2, 2014
    • Hao Wen
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS