Man-Kwan Wong

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Quarry Bay, HK

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Patents Grantslast 30 patents

Information Patent Grant
Automatic power-driven toothbrushes
- Patent number 6,845,537
- Issue date Jan 25, 2005
- Man-Kwan Wong
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
Universally adaptable toothbrush head and improved automatic power-...
- Publication number 20040128778
- Publication date Jul 8, 2004
- Man-Kwan Wong
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Automatic power-driven toothbrushes
- Publication number 20020116775
- Publication date Aug 29, 2002
- Man Kwan Wong
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Head for automatic toothbrushes
- Publication number 20020095734
- Publication date Jul 25, 2002
- Man-Kwan Wong
- G11 - INFORMATION STORAGE