Lehrgeraet fuer den musikalischen Unterricht,申请号DE1929M110144D-传众专利搜索

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发明名称	Lehrgeraet fuer den musikalischen Unterricht
摘要
申请公布号	DE553754(C)	申请公布日期	1932.06.30
申请号	DE1929M110144D	申请日期	1929.05.16
申请人	ERNEST MARRION	发明人
分类号	G09B15/02	主分类号	G09B15/02
代理机构		代理人
主权项
地址

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