Method and devices for recording and reproducing sounds, more particularly applicable to the recording and reproducing of film records,申请号GB19300004363-传众专利搜索

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发明名称	Method and devices for recording and reproducing sounds, more particularly applicable to the recording and reproducing of film records
摘要
申请公布号	GB348567(A)	申请公布日期	1931.05.08
申请号	GB19300004363	申请日期	1930.02.08
申请人	JOSEPH BRAMI	发明人
分类号	G11B7/00	主分类号	G11B7/00
代理机构		代理人
主权项
地址

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