CHUN-HSIEN LEE

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North Point, HK

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Patents Grantslast 30 patents

Information Patent Grant
Safety protection device and control method thereof
- Patent number 9,010,359
- Issue date Apr 21, 2015
- Chun-Hsien Lee
- E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents

Information Patent Application
SAFETY PROTECTION DEVICE AND CONTROL METHOD THEREOF
- Publication number 20130125990
- Publication date May 23, 2013
- CHUN-HSIEN LEE
- E03 - WATER SUPPLY SEWERAGE