Wei Duan

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
High conductivity energy-saving clamping device
- Patent number 8,342,892
- Issue date Jan 1, 2013
- Shanghai Guangwei Electric & Tools Co., Ltd
- YePing Fan
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
HIGH CONDUCTIVITY ENERGY-SAVING CLAMPING DEVICE
- Publication number 20110287673
- Publication date Nov 24, 2011
- SHANGHAI GUANGWEI ELECTRIC & TOOLS CO., LTD.
- YePing Fan
- H01 - BASIC ELECTRIC ELEMENTS