AUTOMATIC AIR INTRODUCING APPARATUS FOR PREVENTING FORMATION OF VACUUM IN DRAIN CONDUIT,申请号KR1019900000742-传众专利搜索

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发明名称	AUTOMATIC AIR INTRODUCING APPARATUS FOR PREVENTING FORMATION OF VACUUM IN DRAIN CONDUIT
摘要
申请公布号	KR1019920000345(B1)	申请公布日期	1992.01.11
申请号	KR1019900000742	申请日期	1990.01.23
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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