KEY FOR CONNECTING ROOF SUPPORT ELEMENTS MADE OF SPECIAL PROFILED IRON,申请号SU19732304005-传众专利搜索

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发明名称	KEY FOR CONNECTING ROOF SUPPORT ELEMENTS MADE OF SPECIAL PROFILED IRON
摘要
申请公布号	SU641108(A1)	申请公布日期	1979.01.05
申请号	SU19732304005	申请日期	1973.12.22
申请人	NI GORNORUDNYJ INSTITUT	发明人	RIVKIN ISAAK DAVIDOVICH,SU;PUGACH NIKIFOR KSENOFONTOVICH,SU;ZAVADNIKOV VALERIJ MOISEEVICH,SU
分类号	E21D11/14;(IPC1-7):E21D11/14	主分类号	E21D11/14
代理机构		代理人
主权项
地址

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