Photoelectric musical instrument,申请号US19510257731-传众专利搜索

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发明名称	Photoelectric musical instrument
摘要
申请公布号	US2774272(A)	申请公布日期	1956.12.18
申请号	US19510257731	申请日期	1951.11.23
申请人	HARBAUGH WATSON D	发明人	HARBAUGH WATSON D.
分类号	G10H3/06	主分类号	G10H3/06
代理机构		代理人
主权项
地址

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