A device for automatically indicating the depth of field of photographic objectives,申请号GB19570013839-传众专利搜索

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发明名称	A device for automatically indicating the depth of field of photographic objectives
摘要
申请公布号	GB821276(A)	申请公布日期	1959.10.07
申请号	GB19570013839	申请日期	1957.05.01
申请人	MARGARETE CAMILLA SCHNEIDER	发明人
分类号	G03B17/02	主分类号	G03B17/02
代理机构		代理人
主权项
地址

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