Improvements in photo-electric exposure meters,申请号GB19380036888-传众专利搜索

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发明名称	Improvements in photo-electric exposure meters
摘要
申请公布号	GB522656(A)	申请公布日期	1940.06.24
申请号	GB19380036888	申请日期	1938.12.19
申请人	METRAWATT AKTIENGESELLSCHAFT FABRIK ELEKTRISCHER MESSGERAETE	发明人
分类号	G01J1/42	主分类号	G01J1/42
代理机构		代理人
主权项
地址

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