Graphophone or sound reproducing instrument,申请号US19340796039-传众专利搜索

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发明名称	Graphophone or sound reproducing instrument
摘要
申请公布号	US2118541(A)	申请公布日期	1938.05.24
申请号	US19340796039	申请日期	1934.01.10
申请人	AUTOMATIC INSTRUMENT COMPANY	发明人	YEIDER HARRY A.
分类号	G11B17/02;G11B17/22	主分类号	G11B17/02
代理机构		代理人
主权项
地址

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