Musical string instrument,申请号US19440539230-传众专利搜索

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发明名称	Musical string instrument
摘要
申请公布号	US2429138(A)	申请公布日期	1947.10.14
申请号	US19440539230	申请日期	1944.06.08
申请人	ROBERT RUF	发明人	RUF ROBERT
分类号	G10D3/04	主分类号	G10D3/04
代理机构		代理人
主权项
地址

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