Playing device for pianos and the like,申请号US19290359361-传众专利搜索

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发明名称	Playing device for pianos and the like
摘要
申请公布号	US1775865(A)	申请公布日期	1930.09.16
申请号	US19290359361	申请日期	1929.04.30
申请人	JOSEPH POELTL	发明人	POELTL JOSEPH
分类号	G10C3/12	主分类号	G10C3/12
代理机构		代理人
主权项
地址

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