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发明名称
OPTISCHE KOP.
摘要
申请公布号
NL7904481(A)
申请公布日期
1979.12.11
申请号
NL19790004481
申请日期
1979.06.07
申请人
HITACHI LIMITED TE TOKIO.
发明人
分类号
G11B7/135;G11B7/085;G11B7/12;(IPC1-7):G11B7/12;G02B27/12
主分类号
G11B7/135
代理机构
代理人
主权项
地址
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