Wave recording apparatus,申请号US19520280061-传众专利搜索

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发明名称	Wave recording apparatus
摘要
申请公布号	US2993161(A)	申请公布日期	1961.07.18
申请号	US19520280061	申请日期	1952.04.01
申请人	NORTHROP CORPORATION	发明人	STEELE FLOYD G.
分类号	G11B20/16	主分类号	G11B20/16
代理机构		代理人
主权项
地址

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