Electric musical instrument,申请号US19390297230-传众专利搜索

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发明名称	Electric musical instrument
摘要
申请公布号	US2254840(A)	申请公布日期	1941.09.02
申请号	US19390297230	申请日期	1939.09.30
申请人	RADIO CORPORATION OF AMERICA	发明人	DEMUTH GALAN W.
分类号	G10H3/20	主分类号	G10H3/20
代理机构		代理人
主权项
地址

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