Cheng HUANG

Follow

Person

Qingdao, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Grouting device for high-coagulability grouting material
- Patent number 11,702,936
- Issue date Jul 18, 2023
- Zhongnian Yang
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
GROUTING DEVICE FOR HIGH-COAGULABILITY GROUTING MATERIAL
- Publication number 20230184113
- Publication date Jun 15, 2023
- QINGDAO UNIVERSITY OF TECHNOLOGY
- Zhongnian YANG
- E21 - EARTH DRILLING MINING