Combination check valve and union,申请号US19330655671-传众专利搜索

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发明名称	Combination check valve and union
摘要
申请公布号	US1932348(A)	申请公布日期	1933.10.24
申请号	US19330655671	申请日期	1933.02.07
申请人	LONG FRED R	发明人	LONG FRED R.
分类号	F16K15/03	主分类号	F16K15/03
代理机构		代理人
主权项
地址

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