Chung Wai (Paul) Cheng

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Hong Kong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Cleaning systems and methods for cleaning containers having non-ver...
- Patent number 8,640,275
- Issue date Feb 4, 2014
- Polygroup Macau Limited (BVI)
- Gary Lee Lawson
- E04 - BUILDING
Information Patent Grant
Light string system
- Patent number 8,419,455
- Issue date Apr 16, 2013
- Polygroup Macau Limited (BVI)
- Chung Wai (Paul) Cheng
- H01 - BASIC ELECTRIC ELEMENTS