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一种轴向可伸缩井壁

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Affilication of Author(s):中国矿业大学深地工程智能建造与健康运维全国重点实验室

Disigner of the Invention:huangjiahui,wangyansen,songlei,renyanlong

Note:黄家会,王衍森,宋雷,任彦龙

Type of Patent:国内

State of Patent:专利授权

Application Number:03152819.8

Authorization number:CN 1320255C

Number of Inventors:5

Service Invention or Not:no

Application Date:2003-08-21

Authorization Date:2007-06-06

First Author:yangweihao