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经营范围
发明名称
MAGNETIC HEADS
摘要
申请公布号
GB1340857(A)
申请公布日期
1973.12.19
申请号
GBD1340857
申请日期
1971.04.19
申请人
EMI LTD
发明人
分类号
G11B5/147;G11B5/29;(IPC1-7):G11B5/42;G11B5/16;G11B5/28;G11B5/78
主分类号
G11B5/147
代理机构
代理人
主权项
地址
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