BORING JIG FOR USE IN MINES,申请号PL19840247313-传众专利搜索

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发明名称	BORING JIG FOR USE IN MINES
摘要
申请公布号	PL136062(B2)	申请公布日期	1986.01.31
申请号	PL19840247313	申请日期	1984.04.17
申请人		发明人
分类号	E21C;(IPC1-7):E21C11/02	主分类号	E21C
代理机构		代理人
主权项
地址

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