Disconnecting of well pipe or tubing joints,申请号US19560559320-传众专利搜索

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发明名称	Disconnecting of well pipe or tubing joints
摘要
申请公布号	US2839143(A)	申请公布日期	1958.06.17
申请号	US19560559320	申请日期	1956.01.16
申请人	ALEXANDER FORD I	发明人	ALEXANDER FORD I.
分类号	E21B31/107	主分类号	E21B31/107
代理机构		代理人
主权项
地址

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