Schallplatte oder Tonaufnahmeplatte,申请号DE1931R082801D-传众专利搜索

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发明名称	Schallplatte oder Tonaufnahmeplatte
摘要
申请公布号	DE637565(C)	申请公布日期	1936.10.30
申请号	DE1931R082801D	申请日期	1931.09.23
申请人	RADIOAKTIENGESELLSCHAFT D. S. LOEWE	发明人	STERN GUIDO
分类号	G11B3/00;G11B3/70	主分类号	G11B3/00
代理机构		代理人
主权项
地址

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