Improvements in or relating to Railway Track Crossings.,申请号GB19680015211-传众专利搜索

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发明名称	Improvements in or relating to Railway Track Crossings.
摘要
申请公布号	GB1171083(A)	申请公布日期	1969.11.19
申请号	GB19680015211	申请日期	1968.03.29
申请人	ACIERIES DE PARIS & D'OUTREAU	发明人
分类号	E01B7/12	主分类号	E01B7/12
代理机构		代理人
主权项
地址

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