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Qianyi LIU

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  • Guangzhou City, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Damping return hammer
    • Patent number 10,421,179
    • Issue date Sep 24, 2019
    • Qianyi Liu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

  • Information Patent Application

    DAMPING RETURN HAMMER
    • Publication number 20180264635
    • Publication date Sep 20, 2018
    • Qianyi LIU
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    BREATHING GLASSES FOR PURIFYING AIR
    • Publication number 20180200544
    • Publication date Jul 19, 2018
    • Qianyi LIU
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE