The counterflow preventing device with dual check valve,申请号KR20080053451-传众专利搜索

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发明名称	The counterflow preventing device with dual check valve
摘要
申请公布号	KR101003768(B1)	申请公布日期	2010.12.23
申请号	KR20080053451	申请日期	2008.06.09
申请人		发明人
分类号	E03B9/02;E03B9/00	主分类号	E03B9/02
代理机构		代理人
主权项
地址

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