Duanqing Gu

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Motorized/manual clutch of curtain track
- Patent number 7,686,064
- Issue date Mar 30, 2010
- Shanghai Qing Ying Sun-Shading Technical Development Co., Ltd.
- Duanqing Gu
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...

Patents Applicationslast 30 patents

Information Patent Application
Motorized/manual clutch of curtain track
- Publication number 20070039700
- Publication date Feb 22, 2007
- Duanqing Gu
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS