Improvements in or relating to insulated roofing structures,申请号GB19490029234-传众专利搜索

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发明名称	Improvements in or relating to insulated roofing structures
摘要
申请公布号	GB672297(A)	申请公布日期	1952.05.21
申请号	GB19490029234	申请日期	1949.11.15
申请人	H. H. ROBERTSON COMPANY	发明人
分类号	E04D3/36;E04D13/16	主分类号	E04D3/36
代理机构		代理人
主权项
地址

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