TREA

Wu Yongquing

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  • Shanghai, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tube with fins having wings
    • Patent number 9,844,807
    • Issue date Dec 19, 2017
    • Wieland-Werke AG
    • Qiu Yalin
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

  • Information Patent Application

    TUBE WITH FINS HAVING WINGS
    • Publication number 20090260792
    • Publication date Oct 22, 2009
    • WOLVERINE TUBE, INC.
    • Qiu Yalin
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...