PERCUSSION DRILL BIT WITH TWO GAUGE BUTTON AND TWO FRONTAL BUTTON INSERTS,申请号AU19840026037-传众专利搜索

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发明名称	PERCUSSION DRILL BIT WITH TWO GAUGE BUTTON AND TWO FRONTAL BUTTON INSERTS
摘要
申请公布号	AU568347(B2)	申请公布日期	1987.12.24
申请号	AU19840026037	申请日期	1984.03.23
申请人	SANTRADE LTD.,	发明人	LARS-ERIK TUNELL
分类号	E21B10/52;E21B10/56;(IPC1-7):E21B10/46	主分类号	E21B10/52
代理机构		代理人
主权项
地址

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