Xiaojun YAN

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Guangzhou City, CN

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Patents Grantslast 30 patents

Information Patent Grant
Structure for steel door
- Patent number 8,136,326
- Issue date Mar 20, 2012
- Xiaojun Yan
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

Information Patent Application
Structure for steel door
- Publication number 20100043340
- Publication date Feb 25, 2010
- Xiaojun YAN
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS