A ONE WAY AIR ADMITTANCE VALVE,申请号GB19900007884-传众专利搜索

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发明名称	A ONE WAY AIR ADMITTANCE VALVE
摘要
申请公布号	GB9007884(D0)	申请公布日期	1990.06.06
申请号	GB19900007884	申请日期	1990.04.06
申请人	FRAWLEY, PATRICK D	发明人
分类号	E03C1/122;F16K17/12;F16K24/06	主分类号	E03C1/122
代理机构		代理人
主权项
地址

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