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Patents

一种利用冻土帷幕修复立井井壁的方法

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School Sign:第一单位

Disigner of the Invention:renyanlong,huangjiahui,yangzhijiang,hantao,zhangtao,zhangchi

Type of Patent:国内

State of Patent:专利授权

Application Number:202010453946.9

Service Invention or Not:no

Application Date:2020-05-26

Authorization Date:2021-09-07

First Author:yangweihao