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发明名称	STEPPED MAGNETIC RECORDING HEAD
摘要
申请公布号	CA555612(A)	申请公布日期	1958.04.08
申请号	CAD555612	申请日期
申请人	DICTAPHONE CORPORATION	发明人	MORTON F. SPEARS
分类号		主分类号
代理机构		代理人
主权项
地址

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