Weimin Chen

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Xuzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Suspending hydraulic pillar
- Patent number 7,717,649
- Issue date May 18, 2010
- China University of Mining and Technology
- Bingwen Li
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Suspending Hydraulic Pillar
- Publication number 20090257831
- Publication date Oct 15, 2009
- Bingwen Li
- E21 - EARTH DRILLING MINING