Gen LI

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Dalian City, CN

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Patents Applicationslast 30 patents

Information Patent Application
GRADED PRESSURE DROP TYPE DETECTION SYSTEM AND DETECTION METHOD OF...
- Publication number 20200165915
- Publication date May 28, 2020
- Dalian University of Technology
- Zhengzhao LIANG
- E21 - EARTH DRILLING MINING
Information Patent Application
GRADED PRESSURE DROP TYPE MULTI STAGE WATER INJECTION DEVICE AND ME...
- Publication number 20200165887
- Publication date May 28, 2020
- Dalian University of Technology
- Zhengzhao LIANG
- E21 - EARTH DRILLING MINING