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Dehai Ji

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  • WeiHai, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical fiber welding machine
    • Patent number 9,575,252
    • Issue date Feb 21, 2017
    • INNO INSTRUMENT (CHINA) INC.
    • Yangri Zhao
    • G02 - OPTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    Optical Fiber Welding Machine
    • Publication number 20140102642
    • Publication date Apr 17, 2014
    • DH INFOTECH (WEIHAI) INC.
    • Yangri Zhao
    • G02 - OPTICS