Method of and means for positioning apparatus in well casings,申请号US19600001219-传众专利搜索

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发明名称	Method of and means for positioning apparatus in well casings
摘要
申请公布号	US3106960(A)	申请公布日期	1963.10.15
申请号	US19600001219	申请日期	1960.01.08
申请人	DOAK HOWARD J	发明人	DOAK HOWARD J.
分类号	E21B47/09	主分类号	E21B47/09
代理机构		代理人
主权项
地址

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