Drill bit with protruding insert stabilizers,申请号SG19950001482-传众专利搜索

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发明名称	Drill bit with protruding insert stabilizers
摘要
申请公布号	SG30444(A1)	申请公布日期	1996.06.01
申请号	SG19950001482	申请日期	1995.10.04
申请人	SMITH INTERNATIONAL, INC	发明人	NGUYEN VAN QUAN
分类号	(IPC1-7):E21	主分类号	(IPC1-7):E21
代理机构		代理人
主权项
地址

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