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Songnan Xu

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  • Nanjing, Jiangsu, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Screw-driven control system
    • Patent number 11,214,981
    • Issue date Jan 4, 2022
    • Nanjing Kangni Mechanical & Electrical Co., Ltd.
    • Xiang Shi
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

  • Information Patent Application

    DRIVE DEVICE FOR INNER SWINGING DOOR
    • Publication number 20200378169
    • Publication date Dec 3, 2020
    • NANJING KANGNI MECHANICAL & ELECTRICAL CO., LTD.
    • Xiang SHI
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    SCREW-DRIVEN CONTROL SYSTEM
    • Publication number 20190024408
    • Publication date Jan 24, 2019
    • NANJING KANGNI MECHANICAL & ELECTRICAL CO., LTD.
    • Xiang Shi
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES