Electric phonograph with separate stylus for recording and reproducing,申请号US19470743535-传众专利搜索

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发明名称	Electric phonograph with separate stylus for recording and reproducing
摘要
申请公布号	US2534368(A)	申请公布日期	1950.12.19
申请号	US19470743535	申请日期	1947.04.24
申请人	DICTAPHONC CORPORATION	发明人	PETRUSCHELL LUCIUS P.
分类号	G11B25/02	主分类号	G11B25/02
代理机构		代理人
主权项
地址

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