Venturi based vacuum valve apparatus and method for water conservation,申请号US08/877650-传众专利搜索

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发明名称	Venturi based vacuum valve apparatus and method for water conservation
摘要
申请公布号	US6182703(B2)	申请公布日期	2001.02.06
申请号	US08/877650	申请日期	1997.06.17
申请人		发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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