Huiwen Xu

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Hangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Louver roller system with cam pin turning mechanism
- Patent number 9,493,983
- Issue date Nov 15, 2016
- HANGZHOU WOKASOLAR TECHNOLOGY CO., LTD.
- Yifei Zhang
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

Information Patent Application
Sequential control roller system for variable a pitch shutter
- Publication number 20160153229
- Publication date Jun 2, 2016
- HANGZHOU WOKASOLAR TECHNOLOGY CO., LTD.
- YIFEI ZHANG
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Application
Louver Roller System with Cam Pin Turning Mechanism
- Publication number 20150184457
- Publication date Jul 2, 2015
- HANGZHOU WOKASOLAR TECHNOLOGY CO., LTD.
- Yifei Zhang
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS