TREA

Ziqian Wu

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  • Nanjing Jiangsu, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Filter for a welding helmet
    • Patent number D1041768
    • Issue date Sep 10, 2024
    • Lincoln Global, Inc.
    • Paul H. Rumpke
    • D29 - Equipment for safety, protection, and rescue
  • Information Patent Grant

    Welding helmet
    • Patent number D992828
    • Issue date Jul 18, 2023
    • Lincoln Global, Inc.
    • Paul H. Rumpke
    • D29 - Equipment for safety, protection, and rescue
  • Information Patent Grant

    Headgear of helmet
    • Patent number D948131
    • Issue date Apr 5, 2022
    • Lincoln Global, Inc.
    • Paul H. Rumpke
    • D29 - Equipment for safety, protection, and rescue