Procédé pour la fabrication de corps creux cylindriques en béton précontraint avec armature pré-tendue en croix,申请号FRD899952-传众专利搜索

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发明名称	Procédé pour la fabrication de corps creux cylindriques en béton précontraint avec armature pré-tendue en croix
摘要
申请公布号	FR899952(A)	申请公布日期	1945.06.15
申请号	FRD899952	申请日期	1943.11.22
申请人		发明人	HOYER EWALD
分类号	B28B21/62;B28B21/68;B28B21/80	主分类号	B28B21/62
代理机构		代理人
主权项
地址

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