CONDUIT D'AIR RESISTANT AU FEU ET A LA CHALEUR,申请号BE19740149488-传众专利搜索

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发明名称	CONDUIT D'AIR RESISTANT AU FEU ET A LA CHALEUR
摘要
申请公布号	BE821022(A1)	申请公布日期	1975.02.03
申请号	BE19740149488	申请日期	1974.10.14
申请人		发明人
分类号	E04F17/04	主分类号	E04F17/04
代理机构		代理人
主权项
地址

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