Audio tape repeater cartridge,申请号US19550491374-传众专利搜索

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发明名称	Audio tape repeater cartridge
摘要
申请公布号	US2830812(A)	申请公布日期	1958.04.15
申请号	US19550491374	申请日期	1955.03.01
申请人	EMERY NASH JAMES;GRAMER WILLIAM L	发明人	NASH JAMES EMERY;GRAMER WILLIAM L.
分类号	G11B15/70	主分类号	G11B15/70
代理机构		代理人
主权项
地址

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