Improvements in or relating to photographic roller blind shutters,申请号GB19530001054-传众专利搜索

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发明名称	Improvements in or relating to photographic roller blind shutters
摘要
申请公布号	GB724651(A)	申请公布日期	1955.02.23
申请号	GB19530001054	申请日期	1953.01.14
申请人	FRANK EDWARD BEISLY	发明人
分类号	G03B9/32	主分类号	G03B9/32
代理机构		代理人
主权项
地址

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