Improvements in sound reproducing apparatus combined with an optical projection screen,申请号GB19320015878-传众专利搜索

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发明名称	Improvements in sound reproducing apparatus combined with an optical projection screen
摘要
申请公布号	GB399931(A)	申请公布日期	1933.10.19
申请号	GB19320015878	申请日期	1932.06.04
申请人	TRANS-LUX DAYLIGHT PICTURE SCREEN CORPORATION	发明人
分类号	G03B21/56	主分类号	G03B21/56
代理机构		代理人
主权项
地址

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