Multiple string well packers,申请号US19570677592-传众专利搜索

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发明名称	Multiple string well packers
摘要
申请公布号	US2950761(A)	申请公布日期	1960.08.30
申请号	US19570677592	申请日期	1957.08.12
申请人	BROWN	发明人	BROWN CICERO C.;COCHRAN CHUDLEIGH B.
分类号	E21B33/122	主分类号	E21B33/122
代理机构		代理人
主权项
地址

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