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一种双层钢板混凝土复合井壁

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Disigner of the Invention:huangjiahui,renyanlong

Note:黄家会,任彦龙

Type of Patent:国际

State of Patent:专利撤回

Application Number:200420027499.7

Authorization number:CN 2700409Y

Number of Inventors:3

Service Invention or Not:no

Application Date:2004-05-19

Authorization Date:2005-05-18

First Author:yangweihao