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Date of Employment:2006-07-16

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一种钻机钻孔速度简易自动记录仪

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Affilication of Author(s):岩土与结构工程研究中心
Patent Applicant:xubangshu
Type of Patent:实用新型
Application Number:201420821456.X
Number of Inventors:1
Service Invention or Not:no
Application Date:2014-12-22
Publication Date:2015-07-22
Authorization Date:2015-07-22

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