An improved arrangement and construction of key-board for musical instruments,申请号GB19280029722-传众专利搜索

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发明名称	An improved arrangement and construction of key-board for musical instruments
摘要
申请公布号	GB323575(A)	申请公布日期	1930.01.09
申请号	GB19280029722	申请日期	1928.10.15
申请人	WILFRID PERRETT	发明人
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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