Jianli XU

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Dongying, CN

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Patents Grantslast 30 patents

Information Patent Grant
Oil pumping unit
- Patent number 8,746,093
- Issue date Jun 10, 2014
- China Petroleum and Chemical Corporation
- Minxuan Wang
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
OIL PUMPING UNIT
- Publication number 20110318199
- Publication date Dec 29, 2011
- Minxuan WANG
- E21 - EARTH DRILLING MINING