DONGGUAN HEWANG ELECTRIC CO., LTD

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Guangdong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Portable lighting device with thermoelectric power source
- Patent number 10,115,881
- Issue date Oct 30, 2018
- DONGGUAN HEWANG ELECTRIC CO., LTD.
- Chaohui Feng
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Portable Generation and Lighting Device Based on Temperature Differ...
- Publication number 20160118569
- Publication date Apr 28, 2016
- DONGGUAN HEWANG ELECTRIC CO., LTD
- Chaohui FENG
- F21 - LIGHTING

Trademarklast 30 trademarks