Plectrum piano action,申请号US19300489451-传众专利搜索

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发明名称	Plectrum piano action
摘要
申请公布号	US1824706(A)	申请公布日期	1931.09.22
申请号	US19300489451	申请日期	1930.10.17
申请人	GIUSEPPE CASCIOTTA	发明人	CASCIOTTA GIUSEPPE
分类号	G10C1/06	主分类号	G10C1/06
代理机构		代理人
主权项
地址

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