Valve stem and check valve therefor,申请号US19370140927-传众专利搜索

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发明名称	Valve stem and check valve therefor
摘要
申请公布号	US2243930(A)	申请公布日期	1941.06.03
申请号	US19370140927	申请日期	1937.05.05
申请人	JENKINS BROS.	发明人	WATSON FRANK H.
分类号	F16K15/20	主分类号	F16K15/20
代理机构		代理人
主权项
地址

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