Hydraulically boosted anchor for wells,申请号US19540441280-传众专利搜索

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发明名称	Hydraulically boosted anchor for wells
摘要
申请公布号	US2881841(A)	申请公布日期	1959.04.14
申请号	US19540441280	申请日期	1954.07.06
申请人	PAGE OIL TOOLS, INC.	发明人	JR. JOHN S. PAGE,
分类号	E21B23/04	主分类号	E21B23/04
代理机构		代理人
主权项
地址

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