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经营范围
发明名称
MAGNETIC RECORDING
摘要
申请公布号
GB1486291(A)
申请公布日期
1977.09.21
申请号
GB19740050137
申请日期
1974.11.19
申请人
SONY CORP
发明人
分类号
G11B5/012;G11B19/02;H04N5/781;(IPC1-7):G11B5/84;B05D5/00;G11B5/52;G11B5/62;G11B5/82;H04N5/78
主分类号
G11B5/012
代理机构
代理人
主权项
地址
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