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Cheung Choi CHAN

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  • Zhaoqing, CN
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Patents Applicationslast 30 patents

  • Information Patent Application

    DRIVING DEVICE FOR DOOR OPENING AND CLOSING
    • Publication number 20220162896
    • Publication date May 26, 2022
    • Guangdong Niuniu Intelligent space Technology Co., Ltd
    • Cheung Choi CHAN
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    DOOR LOCK AND DOOR SYSTEM
    • Publication number 20210304536
    • Publication date Sep 30, 2021
    • Cheung Choi CHAN
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES