Xia ZHAO

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Xining City, Qinghai Province, CN

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Patents Grantslast 30 patents

Information Patent Grant
Mining method
- Patent number 9,739,146
- Issue date Aug 22, 2017
- Xia Zhao
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
MINING METHOD
- Publication number 20160326872
- Publication date Nov 10, 2016
- Xia ZHAO
- E21 - EARTH DRILLING MINING