Система разработки мощных угольных пластов столбами по падению,申请号SU19610736082-传众专利搜索

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发明名称	Система разработки мощных угольных пластов столбами по падению
摘要
申请公布号	SU143761(A1)	申请公布日期	1961.11.30
申请号	SU19610736082	申请日期	1961.06.24
申请人		发明人	EVSEEV V.V.;ZAPREEV S.I.;SKRYLEV P.A.;SHCHERBAKOV L.A.
分类号	E21C41/18	主分类号	E21C41/18
代理机构		代理人
主权项
地址

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