Two-speed turntable drive,申请号US19310512244-传众专利搜索

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发明名称	Two-speed turntable drive
摘要
申请公布号	US2051819(A)	申请公布日期	1936.08.25
申请号	US19310512244	申请日期	1931.01.30
申请人	RADIO CORPORATION OF AMERICA	发明人	CARSON BENJAMIN R.
分类号	G11B15/44;G11B19/265	主分类号	G11B15/44
代理机构		代理人
主权项
地址

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