Improvements in lens systems,申请号GB19370031755-传众专利搜索

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发明名称	Improvements in lens systems
摘要
申请公布号	GB505909(A)	申请公布日期	1939.05.18
申请号	GB19370031755	申请日期	1937.11.18
申请人	VEREENIGD ACOUSTISCH BEDRIJF (ASSOCIATED ACOUSTICS) N.V.	发明人
分类号	G02B13/00	主分类号	G02B13/00
代理机构		代理人
主权项
地址

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