Tuning device for string instruments,申请号US19400340129-传众专利搜索

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发明名称	Tuning device for string instruments
摘要
申请公布号	US2260049(A)	申请公布日期	1941.10.21
申请号	US19400340129	申请日期	1940.06.12
申请人	NICKEL JR FRANK J	发明人	JR. FRANK J. NICKEL,
分类号	G10D3/14	主分类号	G10D3/14
代理机构		代理人
主权项
地址

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