Xiaoyan Wan

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Combined frictional false twisting device for ring spinning frame
- Patent number 9,347,152
- Issue date May 24, 2016
- Shanghai Wool & Jute Textile Research Institute
- Lei Fang
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING

Patents Applicationslast 30 patents

Information Patent Application
Combined frictional false twisting device for ring spinning frame
- Publication number 20150128555
- Publication date May 14, 2015
- SHANGHAI WOOL & JUTE TEXTILE RESEARCH INSTITUTE
- Lei FANG
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING