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经营范围
发明名称
METHOD OF MINING ADJOINING SLOPING SEAMS
摘要
申请公布号
SU1465575(A1)
申请公布日期
1989.03.15
申请号
SU19874253406
申请日期
1987.06.01
申请人
URALSKIJ VNI PI GALURGII
发明人
VILESOV VALERIJ V,SU;CHELYSHEV IGOR V,SU;BELYAVIN NIKOLAJ I,SU
分类号
E21C41/16;E21C41/18
主分类号
E21C41/16
代理机构
代理人
主权项
地址
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