TREA

Kwok-Kuen Tong

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  • Hong Kong, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    5-chamber air freshener
    • Patent number D555778
    • Issue date Nov 20, 2007
    • Waldwick Plastics Corporation
    • Robert Fellows
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    4-Chamber air freshener
    • Patent number D549812
    • Issue date Aug 28, 2007
    • Waldwick Plastics Corporation
    • Robert Fellows
    • D23 - Environmental heating and cooling