TREA

Kwok Nam Shek

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  • Tuen Mun, HK
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric toothbrushes
    • Patent number 5,784,743
    • Issue date Jul 28, 1998
    • Addway Engineering Limited
    • Kwok Nam Shek
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Mechanically driven toothbrush
    • Patent number 5,778,474
    • Issue date Jul 14, 1998
    • Addway Engineering Limited
    • Kwok-Nam Shek
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents