Stuffing box,申请号US19280286119-传众专利搜索

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发明名称	Stuffing box
摘要
申请公布号	US1884642(A)	申请公布日期	1932.10.25
申请号	US19280286119	申请日期	1928.06.18
申请人	CHARLES H. BROWN	发明人	FLAKE THOMAS E.
分类号	E21B33/08;F16J15/18	主分类号	E21B33/08
代理机构		代理人
主权项
地址

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