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经营范围
发明名称
CONTROL CIRCUIT FOR A SPEECH RECORDER CONNECTED TO A MICROPHONE
摘要
申请公布号
GB1585598(A)
申请公布日期
1981.03.04
申请号
GB19780019326
申请日期
1978.05.12
申请人
IBM CORP
发明人
分类号
G11B15/02;G10L11/02;G11B5/027;G11B20/00;G11B20/02;G11B20/10;G11B27/22;(IPC1-7):G10L1/04
主分类号
G11B15/02
代理机构
代理人
主权项
地址
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