TREA

Tsao-Hui Chen

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  • Taichung, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hat device
    • Patent number 6,202,218
    • Issue date Mar 20, 2001
    • Tsao-Hui Chen
    • A42 - HEADWEAR
  • Information Patent Grant

    Hat with extensible visor
    • Patent number 5,839,125
    • Issue date Nov 24, 1998
    • Tsao-Hui Chen
    • A42 - HEADWEAR