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发明名称
OPTICAL PICKUP DEVICE
摘要
申请公布号
JPS6442033(A)
申请公布日期
1989.02.14
申请号
JP19870198459
申请日期
1987.08.07
申请人
SHARP CORP
发明人
TOMURA MITSUHARU
分类号
G11B7/09
主分类号
G11B7/09
代理机构
代理人
主权项
地址
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