Radio index punch,申请号US19510246678-传众专利搜索

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发明名称	Radio index punch
摘要
申请公布号	US2641319(A)	申请公布日期	1953.06.09
申请号	US19510246678	申请日期	1951.09.14
申请人	INTERNATIONAL BUSINESS MACHINES CORPORATION	发明人	HERBERT ROBERT B.;FOX WILLIS E.
分类号	H04H60/44	主分类号	H04H60/44
代理机构		代理人
主权项
地址

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