Improvements in or relating to structural beams,申请号GB19450002453-传众专利搜索

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发明名称	Improvements in or relating to structural beams
摘要
申请公布号	GB595145(A)	申请公布日期	1947.11.27
申请号	GB19450002453	申请日期	1945.01.31
申请人	GREAT LAKES STEEL CORPORATION	发明人
分类号	E04C3/04;E04C3/07	主分类号	E04C3/04
代理机构		代理人
主权项
地址

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