Improvements in metal beams,申请号GB19320008335-传众专利搜索

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发明名称	Improvements in metal beams
摘要
申请公布号	GB381480(A)	申请公布日期	1932.10.06
申请号	GB19320008335	申请日期	1932.03.21
申请人	DONOVAN HENRY LEE	发明人
分类号	E04C3/04;E04C3/06	主分类号	E04C3/04
代理机构		代理人
主权项
地址

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