Deyu Li

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Hong Kong SAR, CN

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Patents Grantslast 30 patents

Information Patent Grant
Double-glazed windows with inherent noise attenuation
- Patent number 8,006,442
- Issue date Aug 30, 2011
- The Hong Kong Polytechnic University
- Li Cheng
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

Information Patent Application
Double-glazed windows wth inherent noise attenuation
- Publication number 20090008185
- Publication date Jan 8, 2009
- The Hong Kong Polytechnic University
- Li Cheng
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS