Water key for trombones and the like,申请号US19470791631-传众专利搜索

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发明名称	Water key for trombones and the like
摘要
申请公布号	US2533388(A)	申请公布日期	1950.12.12
申请号	US19470791631	申请日期	1947.12.13
申请人	THE H. N. WHITE COMPANY	发明人	MEYERS FRED N.
分类号	G10D7/10	主分类号	G10D7/10
代理机构		代理人
主权项
地址

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