Brique creuse pour planchers,申请号FRD981880-传众专利搜索

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发明名称	Brique creuse pour planchers
摘要
申请公布号	FR981880(A)	申请公布日期	1951.05.30
申请号	FRD981880	申请日期	1949.03.01
申请人		发明人	FRENZEL HUGO
分类号	E04B2/02	主分类号	E04B2/02
代理机构		代理人
主权项
地址

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