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经营范围
发明名称
RECORD PROTECTION SYSTEM
摘要
申请公布号
GB1552373(A)
申请公布日期
1979.09.12
申请号
GB19760028054
申请日期
1976.07.06
申请人
RCA CORP
发明人
分类号
G11B17/028;G11B23/00;G11B23/03;(IPC1-7):G11B3/70;G11B3/60
主分类号
G11B17/028
代理机构
代理人
主权项
地址
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