Improvements in or relating to roofing,申请号GB19470008813-传众专利搜索

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发明名称	Improvements in or relating to roofing
摘要
申请公布号	GB622607(A)	申请公布日期	1949.05.04
申请号	GB19470008813	申请日期	1947.04.01
申请人	LEONARD ALFRED TRAHERNE	发明人
分类号	E04B7/08;E04B7/18;E04D13/064	主分类号	E04B7/08
代理机构		代理人
主权项
地址

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