Perfectionnement aux tirefonds pour voies ferrées,申请号FRD42571-传众专利搜索

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发明名称	Perfectionnement aux tirefonds pour voies ferrées
摘要
申请公布号	FR42571(E)	申请公布日期	1933.08.23
申请号	FRD42571	申请日期	1932.04.11
申请人		发明人	BIASI BENVENUTO
分类号	E01B9/12	主分类号	E01B9/12
代理机构		代理人
主权项
地址

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