Perfectionnements aux pianos,申请号FRD695801-传众专利搜索

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发明名称	Perfectionnements aux pianos
摘要
申请公布号	FR695801(A)	申请公布日期	1930.12.22
申请号	FRD695801	申请日期	1930.05.17
申请人	A. D. SCHILLIO	发明人
分类号	G10C3/02	主分类号	G10C3/02
代理机构		代理人
主权项
地址

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