Jia an NIU

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Shenyang City, CN

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Patents Grantslast 30 patents

Information Patent Grant
Energy-absorbing rockbolt
- Patent number 10,605,078
- Issue date Mar 31, 2020
- Northeastern Univeristy
- Xing dong Zhao
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
M-TYPE ENERGY-ABSORBING ROCKBOLT
- Publication number 20200011178
- Publication date Jan 9, 2020
- NORTHEASTERN UNIVERSITY
- Xing dong ZHAO
- E21 - EARTH DRILLING MINING