Sub-assembly for dust suppression in rock drilling,申请号AU19930038184-传众专利搜索

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发明名称	Sub-assembly for dust suppression in rock drilling
摘要
申请公布号	AU3818493(A)	申请公布日期	1993.11.08
申请号	AU19930038184	申请日期	1993.04.01
申请人	JO-ANN NICOL;DAVID THOMAS HANNS	发明人	DAVID THOMAS HANNS;CHRISTOPHER RICHARD CARRALL
分类号	E21B7/04;(IPC1-7):E21C7/08	主分类号	E21B7/04
代理机构		代理人
主权项
地址

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