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一种资源枯竭矿井区段遗留煤柱分类回收方法
- Release time:2020-10-30
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Affilication of Author(s):
矿业工程学院Disigner of the Invention:
zhangwei,杨志,王烁康,huwenmin,李鹏Type of Patent:
国内State of Patent:
专利授权Application Number:
201710513239.2Number of Inventors:
6Service Invention or Not:
noApplication Date:
2017-06-29Authorization Date:
2019-05-07First Author:
Ma Liqiang
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