RADIAL MINING METHOD,申请号ZM19780000015-传众专利搜索

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发明名称	RADIAL MINING METHOD
摘要
申请公布号	ZM1578(A1)	申请公布日期	1978.08.21
申请号	ZM19780000015	申请日期	1978.02.06
申请人	ROYE HENRY L	发明人
分类号	E21C41/00;(IPC1-7):E21C41/00	主分类号	E21C41/00
代理机构		代理人
主权项
地址

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