BEIJING HINEN-HITECH PETROLEUM TECHNOLOGY CO., LTD

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Beijing, CN

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Patents Applicationslast 30 patents

Information Patent Application
FLOW CONTROL SCREEN FOR USE IN OILFIELD EXPLOITATION
- Publication number 20120175104
- Publication date Jul 12, 2012
- BEIJING HINEN-HITECH PETROLEUM TECHNOLOGY CO., LTD
- Bailin Pei
- E21 - EARTH DRILLING MINING