System for optically recording phonograph records,申请号US19250065134-传众专利搜索

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发明名称	System for optically recording phonograph records
摘要
申请公布号	US1810234(A)	申请公布日期	1931.06.16
申请号	US19250065134	申请日期	1925.10.27
申请人	RADIO CORPORATION	发明人	WEINBERGER JULIUS
分类号	G11B7/0037	主分类号	G11B7/0037
代理机构		代理人
主权项
地址

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