Packless valve stem assembly,申请号US19480064573-传众专利搜索

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发明名称	Packless valve stem assembly
摘要
申请公布号	US2630290(A)	申请公布日期	1953.03.03
申请号	US19480064573	申请日期	1948.12.10
申请人	THE WEATHERHEAD COMPANY	发明人	COURTOT LOUIS B.
分类号	F16K41/12	主分类号	F16K41/12
代理机构		代理人
主权项
地址

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