Electrical phonograph attachment for wired radioreceivers,申请号US19280254874-传众专利搜索

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发明名称	Electrical phonograph attachment for wired radioreceivers
摘要
申请公布号	US1745621(A)	申请公布日期	1930.02.04
申请号	US19280254874	申请日期	1928.02.16
申请人	FEDERAL TELEGRAPH COMPANY	发明人	HOUGH CLINTON W.
分类号	G11B31/00	主分类号	G11B31/00
代理机构		代理人
主权项
地址

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