FEED METHOD IN UNDERGROUND HOLE,申请号JP19860056677-传众专利搜索

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发明名称	FEED METHOD IN UNDERGROUND HOLE
摘要
申请公布号	JPS62215800(A)	申请公布日期	1987.09.22
申请号	JP19860056677	申请日期	1986.03.14
申请人	NIPPON STEEL CORP	发明人	KITAJIMA OKUNI
分类号	E21F13/04	主分类号	E21F13/04
代理机构		代理人
主权项
地址

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