DRILL PIPE HAVING AN INTERNALLY COATED ELECTRICAL PATHWAY,申请号AU20020348402-传众专利搜索

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发明名称	DRILL PIPE HAVING AN INTERNALLY COATED ELECTRICAL PATHWAY
摘要
申请公布号	AU2002348402(A1)	申请公布日期	2004.05.13
申请号	AU20020348402	申请日期	2002.10.23
申请人	VARCO I/P, INC.	发明人	GEORGE BOYADJIEFF
分类号	E21B17/00;E21B17/02;E21B47/00	主分类号	E21B17/00
代理机构		代理人
主权项
地址

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