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发明名称
OPTICAL PICKUP DEVICE
摘要
申请公布号
JPH0520696(A)
申请公布日期
1993.01.29
申请号
JP19910197363
申请日期
1991.07.12
申请人
RICOH CO LTD
发明人
SOFUE MASAAKI
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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