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一种巷道顶板锚杆钻孔充填树脂药卷的方法
- Release time:2020-10-30
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Affilication of Author(s):
矿业工程学院Disigner of the Invention:
刘权,zhangdongsheng,tushihao,王红胜State of Patent:
专利授权Application Number:
2581587Number of Inventors:
5Service Invention or Not:
noApplication Date:
2013-12-05Authorization Date:
2016-03-25First Author:
Ma Liqiang
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