Lung Fai Wong

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Hong Kong, HK

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Patents Grantslast 30 patents

Information Patent Grant
Forced entry resistance system for wooden doors and method for manu...
- Patent number 9,482,044
- Issue date Nov 1, 2016
- Lung Fai Wong
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

Information Patent Application
FORCED ENTRY RESISTANCE SYSTEM FOR WOODEN DOORS AND METHOD FOR MANU...
- Publication number 20150204134
- Publication date Jul 23, 2015
- Lung Fai Wong
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS