Wentao Chang

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Guangdong, CN

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Patents Grantslast 30 patents

Information Patent Grant
LED lamp
- Patent number D799724
- Issue date Oct 10, 2017
- Smalux Electrical Mfg. Ltd.
- Yonggang Wei
- D26 - Lighting
Information Patent Grant
LED bulb
- Patent number D716970
- Issue date Nov 4, 2014
- CE Lighting Ltd.
- Yonggang Wei
- D26 - Lighting