CONJUNTO ROTATIVO DE MORDENTES MECANICOS,申请号BR19770000030-传众专利搜索

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发明名称	CONJUNTO ROTATIVO DE MORDENTES MECANICOS
摘要
申请公布号	BR7700030(A)	申请公布日期	1977.09.06
申请号	BR19770000030	申请日期	1977.01.05
申请人	BJ HUGHES INC	发明人	MCFADDEN E;STUCKEY T
分类号	E21B3/04;E21B19/06;E21B19/10;(IPC1-7):E21B11/04	主分类号	E21B3/04
代理机构		代理人
主权项
地址

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