Push-pull sound recorder,申请号US19350032732-传众专利搜索

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发明名称	Push-pull sound recorder
摘要
申请公布号	US2096576(A)	申请公布日期	1937.10.19
申请号	US19350032732	申请日期	1935.07.23
申请人	RADIO CORPORATION	发明人	DIMMICK GLENN L.
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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