煤矿巷道围岩变形监测装置

Release time:2020-10-30 Hits:

Disigner of the Invention:李彦琪,wanzhijun,雷龙飞,陈思霖,史毛宁,刘月,张书荣,周嘉乐

Type of Patent:国际

State of Patent:专利授权

Application Number:201920367070.9

Number of Inventors:9

Service Invention or Not:no

Application Date:2019-03-21

Authorization Date:2019-11-26

First Author:chengjingyi