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Changcheng LI

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  • Haidian District, Beijing, CN
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Patents Applicationslast 30 patents

  • Information Patent Application

    FAN AND CLEANING DEVICE
    • Publication number 20240084811
    • Publication date Mar 14, 2024
    • Beijing Roborock Technology Co., Ltd.
    • Yuanjian LIANG
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    STATOR, FAN, AND CLEANING DEVICE
    • Publication number 20230307978
    • Publication date Sep 28, 2023
    • Beijing Roborock Technology Co., Ltd.
    • Changcheng LI
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    FAN AND CLEANING APPARATUS
    • Publication number 20230296101
    • Publication date Sep 21, 2023
    • Beijing Roborock Technology Co., Ltd.
    • Changcheng LI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FAN AND CLEANING DEVICE
    • Publication number 20230220852
    • Publication date Jul 13, 2023
    • Beijing Roborock Technology Co., Ltd.
    • Changcheng LI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...