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发明名称
DEFECT DETECTING CIRCUIT FOR OPTICAL PICKUP DEVICE
摘要
申请公布号
JPH0464924(A)
申请公布日期
1992.02.28
申请号
JP19900176977
申请日期
1990.07.04
申请人
RICOH CO LTD
发明人
AOKI IKUO
分类号
G11B7/00;G11B7/0037;G11B7/004;G11B7/005;G11B7/09
主分类号
G11B7/00
代理机构
代理人
主权项
地址
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