Hing Wai Michael Ma

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Kowloon, CN

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Patents Grantslast 30 patents

Information Patent Grant
Safety protection structure for universal sockets
- Patent number 7,753,700
- Issue date Jul 13, 2010
- Cord-It Limited
- Hing Wai Michael Ma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Safe power plugging mechanism
- Patent number 7,661,992
- Issue date Feb 16, 2010
- Cord-It Limited
- Hing Wai Michael Ma
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Safety protection structure for universal sockets
- Publication number 20100093198
- Publication date Apr 15, 2010
- Hing Wai Michael Ma
- H01 - BASIC ELECTRIC ELEMENTS