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提高巷道底板锚杆锚索成孔效率和锚固性能的装置

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Disigner of the Invention:王其洲,jingshengguo

Type of Patent:国际

State of Patent:专利授权

Application Number:201320483722.8

Number of Inventors:3

Service Invention or Not:no

Application Date:2013-08-08

Authorization Date:2014-04-16

First Author:xiewenbing