Retrievable bridge plug,申请号US19650476828-传众专利搜索

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发明名称	Retrievable bridge plug
摘要
申请公布号	US3357493(A)	申请公布日期	1967.12.12
申请号	US19650476828	申请日期	1965.08.03
申请人	CONRAD MARTIN B	发明人	CONRAD MARTIN B.
分类号	E21B33/1295	主分类号	E21B33/1295
代理机构		代理人
主权项
地址

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