COAL-WINNING SYSTEM,申请号SU19884607751-传众专利搜索

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发明名称	COAL-WINNING SYSTEM
摘要
申请公布号	SU1633115(A1)	申请公布日期	1991.03.07
申请号	SU19884607751	申请日期	1988.11.22
申请人	LE GORNYJ I IM.G.V.PLEKHANOVA	发明人	OVCHARENKO GRIGORIJ V,SU
分类号	E21C27/32	主分类号	E21C27/32
代理机构		代理人
主权项
地址

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