Improvements relating to bridges,申请号GB19490003369-传众专利搜索

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发明名称	Improvements relating to bridges
摘要
申请公布号	GB670265(A)	申请公布日期	1952.04.16
申请号	GB19490003369	申请日期	1949.02.07
申请人	GILBERT ROBERTS	发明人
分类号	E01D15/06	主分类号	E01D15/06
代理机构		代理人
主权项
地址

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