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发明名称
OPTICAL PICKUP DEVICE
摘要
申请公布号
JPH04195934(A)
申请公布日期
1992.07.15
申请号
JP19900327851
申请日期
1990.11.28
申请人
SONY CORP
发明人
YAMAKAWA AKIO
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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