Perfectionnements au procédé et appareillage de frettage des traverses de chemins de fer,申请号FRD62439-传众专利搜索

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发明名称	Perfectionnements au procédé et appareillage de frettage des traverses de chemins de fer
摘要
申请公布号	FR62439(E)	申请公布日期	1955.06.14
申请号	FRD62439	申请日期	1952.02.05
申请人		发明人	STRAHM FREDERIC-EDOUARD-MAR
分类号	E01B3/08;G09F3/03	主分类号	E01B3/08
代理机构		代理人
主权项
地址

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