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Fei ZHANG

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  • Shaoxing, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Guide frame for four-way reversing valve
    • Patent number 12,104,708
    • Issue date Oct 1, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Fei Zhang
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Reversing Valve, and Assembly Method of Reversing Valve
    • Publication number 20240183454
    • Publication date Jun 6, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Zhongbo FENG
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Valve Core Assembly and Reversing Valve with Valve Core Assembly
    • Publication number 20230358323
    • Publication date Nov 9, 2023
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Fei ZHANG
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    GUIDE FRAME FOR FOUR-WAY REVERSING VALVE
    • Publication number 20230228334
    • Publication date Jul 20, 2023
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Fei ZHANG
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...