Zusammenziehbarer Kern zur Herstellung von laengsgelochten Betonformstuecken von kreisfoermigem oder ovalem Querschnitt,申请号DENDATSC90772D-传众专利搜索

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发明名称	Zusammenziehbarer Kern zur Herstellung von laengsgelochten Betonformstuecken von kreisfoermigem oder ovalem Querschnitt
摘要
申请公布号	DE505146(C)	申请公布日期	1930.08.15
申请号	DENDATSC90772D	申请日期
申请人	ERHARD SCHIEFER	发明人
分类号	B28B7/30	主分类号	B28B7/30
代理机构		代理人
主权项
地址

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