TWIN DUCT VENT PIPE SYSTEM,申请号GB19910025799-传众专利搜索

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发明名称	TWIN DUCT VENT PIPE SYSTEM
摘要
申请公布号	GB9125799(D0)	申请公布日期	1992.02.05
申请号	GB19910025799	申请日期	1991.12.04
申请人	MARTIN, ANNE K	发明人
分类号	E03C1/122;E03F5/08;F16L9/18	主分类号	E03C1/122
代理机构		代理人
主权项
地址

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