Improved method and apparatus for recording and reproducing moving pictures and accompanying sound,申请号GB19310016242-传众专利搜索

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发明名称	Improved method and apparatus for recording and reproducing moving pictures and accompanying sound
摘要
申请公布号	GB379737(A)	申请公布日期	1932.09.05
申请号	GB19310016242	申请日期	1931.06.04
申请人	ELECTRICAL RESEARCH PRODUCTS INC.	发明人
分类号	G03B31/00	主分类号	G03B31/00
代理机构		代理人
主权项
地址

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