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发明名称	MINE SAFETY DOOR
摘要
申请公布号	SU621900(A1)	申请公布日期	1978.08.30
申请号	SU19772485200	申请日期	1977.05.11
申请人	KRIKUN YAKOV KIRILLOVICH,SU;KOKIN ALEKSANDR YUREVICH,SU;RAZUMOVSKIJ NIKOLAJ GRIGOREVICH,SU	发明人	KRIKUN YAKOV KIRILLOVICH,SU;KOKIN ALEKSANDR YUREVICH,SU;RAZUMOVSKIJ NIKOLAJ GRIGOREVICH,SU
分类号	E21F15/00;E21F1/14;(IPC1-7):E21F15/00	主分类号	E21F15/00
代理机构		代理人
主权项
地址

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