Wire line stuffing box,申请号US19480029207-传众专利搜索

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发明名称	Wire line stuffing box
摘要
申请公布号	US2606746(A)	申请公布日期	1952.08.12
申请号	US19480029207	申请日期	1948.05.26
申请人	UNITED STATES STEEL COMPANY	发明人	FORD GEORGE A.
分类号	E21B21/02;E21B33/072	主分类号	E21B21/02
代理机构		代理人
主权项
地址

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