An anti-back flow device by means of single flow design,申请号HK20070113414-传众专利搜索

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发明名称	An anti-back flow device by means of single flow design
摘要
申请公布号	HK1106666(A2)	申请公布日期	2008.03.14
申请号	HK20070113414	申请日期	2007.12.07
申请人	TONG YIU KWOK	发明人	TONG YIU KWOK
分类号	E03F	主分类号	E03F
代理机构		代理人
主权项
地址

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