Method of and apparatus for recording and reproducing sounds,申请号US19270237322-传众专利搜索

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法人/股东/高管

发明名称	Method of and apparatus for recording and reproducing sounds
摘要
申请公布号	US1781550(A)	申请公布日期	1930.11.11
申请号	US19270237322	申请日期	1927.12.02
申请人	BERNARD KWARTIN	发明人	KWARTIN BERNARD
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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