Method of valve stem packing,申请号US19340743414-传众专利搜索

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发明名称	Method of valve stem packing
摘要
申请公布号	US2061874(A)	申请公布日期	1936.11.24
申请号	US19340743414	申请日期	1934.09.10
申请人	SEALED POWER CORPORATION	发明人	JOHNSON CHARLES E.
分类号	F01L3/08	主分类号	F01L3/08
代理机构		代理人
主权项
地址

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