一种巷道表面位移观测装置

Release time:2020-10-30 Hits:

Disigner of the Invention:张源,李根威

Note:张源,李根威

Type of Patent:国际

State of Patent:专利撤回

Application Number:200920284580.6

Authorization number:CN 201583223 U

Number of Inventors:3

Service Invention or Not:no

Application Date:2009-12-12

Authorization Date:2010-09-15

First Author:wanzhijun