Improvements in means for recording sound on, and reproducing sound recorded on, a kinema film,申请号GB19290033043-传众专利搜索

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发明名称	Improvements in means for recording sound on, and reproducing sound recorded on, a kinema film
摘要
申请公布号	GB346851(A)	申请公布日期	1931.04.23
申请号	GB19290033043	申请日期	1930.08.23
申请人	BAILEY SOUTHWELL	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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