Improvements in safety devices for roofs,申请号GB19380027297-传众专利搜索

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发明名称	Improvements in safety devices for roofs
摘要
申请公布号	GB518051(A)	申请公布日期	1940.02.15
申请号	GB19380027297	申请日期	1938.09.19
申请人	EVELYN HURDEN	发明人
分类号	E04D3/36	主分类号	E04D3/36
代理机构		代理人
主权项
地址

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