Recording pickup having torsion rods,申请号US19470733744-传众专利搜索

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发明名称	Recording pickup having torsion rods
摘要
申请公布号	US2543655(A)	申请公布日期	1951.02.27
申请号	US19470733744	申请日期	1947.03.11
申请人	THE SOUNDSCRIBER CORPORATION	发明人	BALMER DONALD F.;RUNGE FRANK E.
分类号	H04R11/08	主分类号	H04R11/08
代理机构		代理人
主权项
地址

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