Stop pad for wind instruments,申请号US19450635858-传众专利搜索

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发明名称	Stop pad for wind instruments
摘要
申请公布号	US2534660(A)	申请公布日期	1950.12.19
申请号	US19450635858	申请日期	1945.12.19
申请人	COLLIS JAMES A	发明人	COLLIS JAMES A.
分类号	G10D9/04	主分类号	G10D9/04
代理机构		代理人
主权项
地址

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