Sound recording and reproducing machine,申请号US19330658226-传众专利搜索

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发明名称	Sound recording and reproducing machine
摘要
申请公布号	US2085383(A)	申请公布日期	1937.06.29
申请号	US19330658226	申请日期	1933.02.23
申请人	DIKTIERMASCHINEN-PATENTVERWERTUNGS-GESELLSCHAFT M.B.H.	发明人	NEUMANN LEOPOLD
分类号	G11B25/06	主分类号	G11B25/06
代理机构		代理人
主权项
地址

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