Improvements in mechanism for reproducing photographically-recorded sound especially in association with kinematographic projectors,申请号GB19320018999-传众专利搜索

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发明名称	Improvements in mechanism for reproducing photographically-recorded sound especially in association with kinematographic projectors
摘要
申请公布号	GB384933(A)	申请公布日期	1932.12.15
申请号	GB19320018999	申请日期	1932.07.05
申请人	JOHN WOODWARD	发明人
分类号	G03B31/02;G11B7/00	主分类号	G03B31/02
代理机构		代理人
主权项
地址

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