Erosion resistant drilling head assembly,申请号AU20020340067-传众专利搜索

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发明名称	Erosion resistant drilling head assembly
摘要
申请公布号	AU2002340067(A1)	申请公布日期	2003.04.07
申请号	AU20020340067	申请日期	2002.09.27
申请人	DIAMOND ROTATING HEADS, INC.	发明人	PATRICK LOOPER
分类号	E21B33/08;(IPC1-7):E21B19/08	主分类号	E21B33/08
代理机构		代理人
主权项
地址

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