Liquid seal stuffing box assembly and polished rod for the same,申请号US19480063692-传众专利搜索

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发明名称	Liquid seal stuffing box assembly and polished rod for the same
摘要
申请公布号	US2544212(A)	申请公布日期	1951.03.06
申请号	US19480063692	申请日期	1948.12.06
申请人	PHILLIPS PETROLEUM COMPANY	发明人	BAYLESS FREDERICK B.;CHASE DEAN A.
分类号	F16J15/40	主分类号	F16J15/40
代理机构		代理人
主权项
地址

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