Improvements in and relating to hollow structural members of sheet metal for building purposes,申请号GB19300026449-传众专利搜索

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发明名称	Improvements in and relating to hollow structural members of sheet metal for building purposes
摘要
申请公布号	GB349864(A)	申请公布日期	1931.06.04
申请号	GB19300026449	申请日期	1930.09.04
申请人	HUGO JUNKERS	发明人
分类号	B64C1/00	主分类号	B64C1/00
代理机构		代理人
主权项
地址

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