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经营范围
发明名称
HELICAL SCAN MAGNETIC TAPE TRANSDUCING DEVICE
摘要
申请公布号
GB1514681(A)
申请公布日期
1978.06.21
申请号
GB19760034140
申请日期
1976.08.17
申请人
IBM CORP
发明人
分类号
G11B5/00;G11B5/52;G11B15/61;(IPC1-7):G11B15/64;G11B21/04
主分类号
G11B5/00
代理机构
代理人
主权项
地址
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