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一种矸石充填薄煤层掘进方法
- Release time:2020-10-30
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Affilication of Author(s):
矿业工程学院Disigner of the Invention:
zhangdongsheng,王峰Note:
张东升,王峰Type of Patent:
国内State of Patent:
专利授权Application Number:
200710020152.8Authorization number:
CN 100590294CNumber of Inventors:
3Service Invention or Not:
noApplication Date:
2007-02-23Authorization Date:
2010-02-17First Author:
Ma Liqiang
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