Ruzhong Cheng

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Shenzhen, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for detecting fatigue driving and the automobile...
- Patent number 8,891,824
- Issue date Nov 18, 2014
- Shenzhen Safdao Technology Corporation
- Zejun Wu
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND DEVICE FOR DETECTING FATIGUE DRIVING AND THE AUTOMOBILE...
- Publication number 20120219189
- Publication date Aug 30, 2012
- Shenzhen Safdao Technology Corporation Limited
- Zejun Wu
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE