Yunhai DU

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Zhejiang, CN

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Patents Grantslast 30 patents

Information Patent Grant
Lighting system with monitoring and alarm function
- Patent number 10,148,915
- Issue date Dec 4, 2018
- NINGBO YAMAO OPTOELECTRONICS CO., LTD.
- Maojun Cao
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
LIGHTING SYSTEM WITH MONITORING AND ALARM FUNCTION
- Publication number 20170339376
- Publication date Nov 23, 2017
- Ningbo Yamao Optoelectronics Co., Ltd.
- MAOJUN CAO
- F21 - LIGHTING