Improvements in or relating to roofing,申请号GB19460019174-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	GB613693(A)	申请公布日期	1948.12.01
申请号	GB19460019174	申请日期	1946.06.26
申请人	HUGH TWADDLE & SON LIMITED;ROBERT PINKERTON	发明人
分类号	E04D3/366	主分类号	E04D3/366
代理机构		代理人
主权项
地址

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