Zhongxue Gan

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LangFang, CN

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Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR JOINT-MINING OF COALBED GAS AND COAL
- Publication number 20150247385
- Publication date Sep 3, 2015
- ENN COAL GASIFICATION MINING CO., LTD.
- Feng Chen
- E21 - EARTH DRILLING MINING