Wei Chen

Follow

Person

Wuhan, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Full-circle secondary lining inverted arch construction formwork sy...
- Patent number 11,898,447
- Issue date Feb 13, 2024
- CCTEB INFRASTRUCTURE CONSTRUCTION INVESTMENT CO., LTD.
- Xiaosong Dai
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Full-circle secondary lining inverted arch construction formwork sy...
- Publication number 20210231014
- Publication date Jul 29, 2021
- CCTEB INFRASTRUCTURE CONSTRUCTION INVESTMENT CO., LTD.
- Xiaosong Dai
- E21 - EARTH DRILLING MINING