VENTILATION UNIT FOR VENTILATING SPACES BENEATH A ROOFING,申请号PL19830241331-传众专利搜索

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发明名称	VENTILATION UNIT FOR VENTILATING SPACES BENEATH A ROOFING
摘要
申请公布号	PL134975(B1)	申请公布日期	1985.09.30
申请号	PL19830241331	申请日期	1983.03.31
申请人		发明人
分类号	E04D;E04D13/16;E04F17/04;(IPC1-7):E04D13/16	主分类号	E04D
代理机构		代理人
主权项
地址

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