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David Hong

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  • Hong Kong, HK
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pressure washer
    • Patent number D528714
    • Issue date Sep 19, 2006
    • Winners Products Engineering Ltd.
    • David Hong
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Pressure washer
    • Patent number D523193
    • Issue date Jun 13, 2006
    • Winners Products Engineering Ltd.
    • David Hong
    • D32 - Washing, cleaning, or drying machine