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发明名称
OPTICAL PICK UP DEVICE
摘要
申请公布号
JPH05128538(A)
申请公布日期
1993.05.25
申请号
JP19910286409
申请日期
1991.10.31
申请人
RICOH CO LTD
发明人
HAGITANI TOSHIMICHI
分类号
G11B7/08
主分类号
G11B7/08
代理机构
代理人
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地址
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