Phonograph needle or stylus,申请号US19490110550-传众专利搜索

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发明名称	Phonograph needle or stylus
摘要
申请公布号	US2619353(A)	申请公布日期	1952.11.25
申请号	US19490110550	申请日期	1949.08.16
申请人	KAHN ELLIOTT H	发明人	KAHN ELLIOTT H.
分类号	G11B3/48	主分类号	G11B3/48
代理机构		代理人
主权项
地址

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