TREA

Gongchi Lu

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  • Shanghai, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pen
    • Patent number D1055158
    • Issue date Dec 24, 2024
    • HAINAN XINGYE INVESTMENT CO., LTD.
    • Weifeng Lu
    • D19 - Office supplies
  • Information Patent Grant

    Two-color pen
    • Patent number 11,787,222
    • Issue date Oct 17, 2023
    • HAINAN XINGYE INVESTMENT CO., LTD.
    • Weifeng Lu
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES