Radio phonographic apparatus,申请号US19240748850-传众专利搜索

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发明名称	Radio phonographic apparatus
摘要
申请公布号	US1840772(A)	申请公布日期	1932.01.12
申请号	US19240748850	申请日期	1924.11.10
申请人	EHRET CORNELIUS D	发明人	EHRET CORNELIUS D.
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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