DEVICE FOR COAL DRAWING,申请号SU19884472754-传众专利搜索

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发明名称	DEVICE FOR COAL DRAWING
摘要
申请公布号	SU1573198(A1)	申请公布日期	1990.06.23
申请号	SU19884472754	申请日期	1988.08.08
申请人	LE GORNYJ I IM.G.V.PLEKHANOVA	发明人	VASILEV ANATOLIJ V,SU;GROMOV YURIJ V,SU;BYCHKOV YURIJ N,SU
分类号	E21D23/04;E21F13/04	主分类号	E21D23/04
代理机构		代理人
主权项
地址

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