TREA

Yau Sing LAI

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  • Hong Kong, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Folding door structure
    • Patent number 11,434,679
    • Issue date Sep 6, 2022
    • CYBER TOP TRADING LIMITED
    • Yan Biao Xiao
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

  • Information Patent Application

    SLIDING DOOR
    • Publication number 20230228139
    • Publication date Jul 20, 2023
    • 3I WINDOW AND DOOR LIMIITED
    • YAU SING LAI
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    FOLDING DOOR STRUCTURE
    • Publication number 20190078367
    • Publication date Mar 14, 2019
    • Cyber Top Trading Limited
    • Yan Biao XIAO
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES