Automatic turntable speed and needle changer control for playing intermixed records,申请号US19530347507-传众专利搜索

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发明名称	Automatic turntable speed and needle changer control for playing intermixed records
摘要
申请公布号	US2997303(A)	申请公布日期	1961.08.22
申请号	US19530347507	申请日期	1953.04.08
申请人	VARIOUS ASSIGNEES	发明人	MENTZER ELIZABETH M.
分类号	G11B3/04;G11B19/265	主分类号	G11B3/04
代理机构		代理人
主权项
地址

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