Eisenbahnschwelle aus Spannbeton,申请号DE1955D020947-传众专利搜索

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发明名称	Eisenbahnschwelle aus Spannbeton
摘要
申请公布号	DE1004638(B)	申请公布日期	1957.03.21
申请号	DE1955D020947	申请日期	1955.07.26
申请人	DYCKERHOFF & WIDMANN KOMMANDITGESELLSCHAFT	发明人
分类号	E01B3/34	主分类号	E01B3/34
代理机构		代理人
主权项
地址

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