Magnetic recording,申请号US19490081983-传众专利搜索

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发明名称	Magnetic recording
摘要
申请公布号	US2676022(A)	申请公布日期	1954.04.20
申请号	US19490081983	申请日期	1949.03.17
申请人	ERNEST G. VAN LEEUWEN;ALFRED W. NEELY	发明人	ROBERTS BRUCE
分类号	G11B5/55;G11B15/44	主分类号	G11B5/55
代理机构		代理人
主权项
地址

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