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Yijian Li

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  • Xiamen, CN
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Patents Applicationslast 30 patents

  • Information Patent Application

    Code changing structure applied to key coded lock
    • Publication number 20230212878
    • Publication date Jul 6, 2023
    • XIAMEN MAKE SECURITY TECHNOLOGY CO., LTD.
    • Yijian LI
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    NOVEL CODE WHEEL COMBINATION LOCK
    • Publication number 20230127631
    • Publication date Apr 27, 2023
    • XIAMEN MAKE SECURITY TECHNOLOGY CO., LTD.
    • Yijian Li
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    COMBINATION LOCK
    • Publication number 20230022564
    • Publication date Jan 26, 2023
    • XIAMEN MAKE SECURITY TECHNOLOGY CO., LTD.
    • Yijian Li
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES