An improved shutter for use in connection with the roof windows of buildings,申请号GB19390017157-传众专利搜索

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发明名称	An improved shutter for use in connection with the roof windows of buildings
摘要
申请公布号	GB530008(A)	申请公布日期	1940.12.03
申请号	GB19390017157	申请日期	1939.06.12
申请人	JOHN CRIGHTON	发明人
分类号	E04D13/03	主分类号	E04D13/03
代理机构		代理人
主权项
地址

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