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一种薄基岩浅埋煤层保水开采适用条件分类方法
- Release time:2020-10-30
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Affilication of Author(s):
矿业工程学院Disigner of the Invention:
zhangdongsheng,刘玉德Note:
张东升,刘玉德Type of Patent:
国内State of Patent:
专利撤回Application Number:
200710022124.XNumber of Inventors:
3Service Invention or Not:
noApplication Date:
2007-05-04Authorization Date:
2010-05-19First Author:
Ma Liqiang
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