Stuffing box structure,申请号US19480006776-传众专利搜索

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发明名称	Stuffing box structure
摘要
申请公布号	US2502872(A)	申请公布日期	1950.04.04
申请号	US19480006776	申请日期	1948.02.06
申请人	MICKELWAIT JAMES N;GIBBS JOSEPH R	发明人	MICKELWAIT JAMES N.;GIBBS JOSEPH R.
分类号	E21B33/08	主分类号	E21B33/08
代理机构		代理人
主权项
地址

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