Perfectionnements aux dispositifs permettant l'observation des objets transparents avec un contraste accru et variable,申请号FRD1046676-传众专利搜索

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发明名称	Perfectionnements aux dispositifs permettant l'observation des objets transparents avec un contraste accru et variable
摘要
申请公布号	FR1046676(A)	申请公布日期	1953.12.08
申请号	FRD1046676	申请日期	1951.07.09
申请人	N. V. OPTISCHE INDUSTRIE DE OUDE DELFT	发明人
分类号	G02B5/08;G02B27/02	主分类号	G02B5/08
代理机构		代理人
主权项
地址

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