刘清泉

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Gas content measuring device used in an underground coal mine
Release time:2020-10-30  Hits:

Disigner of the Invention:liuqingquan,maxiaohang,anhaoxue,yufeiyang,miaohang
Type of Patent:Utility models
State of Patent:专利授权
Application Number:CN 201920418054.8
Authorization number:ZL 201920418054.8
Number of Inventors:6
Service Invention or Not:no
Application Date:2019-03-29
Authorization Date:2019-12-31
First Author:lvbiao

Pre One:A quantitative evaluation method for permeability enhancement effect of hydraulic flushing with cross-measure boreholes

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