COWL OF MINE SHAFT DIVIDERS,申请号SU19894635053-传众专利搜索

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发明名称	COWL OF MINE SHAFT DIVIDERS
摘要
申请公布号	SU1659665(A1)	申请公布日期	1991.06.30
申请号	SU19894635053	申请日期	1989.01.12
申请人	DN GORNYJ I IM.ARTEMA	发明人	KIRIN ROMAN S,SU
分类号	E21D7/02	主分类号	E21D7/02
代理机构		代理人
主权项
地址

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