TREA

Hoi C. Chan

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  • New Territories, Hong Kong, HK
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rolling-massaging mattress or cushion
    • Patent number 5,416,936
    • Issue date May 23, 1995
    • Hoi C. Chan
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Massaging mattress
    • Patent number 5,168,588
    • Issue date Dec 8, 1992
    • Hoi C. Chan
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE