Perfectionnements aux appareils de projection,申请号FRD684620-传众专利搜索

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发明名称	Perfectionnements aux appareils de projection
摘要
申请公布号	FR684620(A)	申请公布日期	1930.06.27
申请号	FRD684620	申请日期	1929.10.30
申请人	TRANS-LUX DAYLIGHT PICTURE SCREEN CORPORATION	发明人
分类号	G02B1/00;G02B13/04;G03B15/08	主分类号	G02B1/00
代理机构		代理人
主权项
地址

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