Zhihua Zhang

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Nanjing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Water heater
- Patent number 8,161,918
- Issue date Apr 24, 2012
- AOS Holding Company
- Hongfei Ma
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
WATER HEATER
- Publication number 20100043728
- Publication date Feb 25, 2010
- Hongfei Ma
- F24 - HEATING RANGES VENTILATING