Kai QUAN

Follow

Person

Jiangsu, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for pre-loading mechanical constant-resistance...
- Patent number 10,385,692
- Issue date Aug 20, 2019
- China University of Mining and Technology
- Jixiong Zhang
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
APPARATUS AND METHOD FOR PRE-LOADING MECHANICAL CONSTANT-RESISTANCE...
- Publication number 20190085690
- Publication date Mar 21, 2019
- CHINA UNIVERSITY OF MINING AND TECHNOLOGY
- Jixiong ZHANG
- E21 - EARTH DRILLING MINING