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发明名称
OPTICAL SPOT POSITION DETECTING SYSTEM FOR OPTICAL DISC
摘要
申请公布号
JPS5897138(A)
申请公布日期
1983.06.09
申请号
JP19810194518
申请日期
1981.12.04
申请人
HITACHI SEISAKUSHO KK
发明人
MAEDA TAKESHI;UNO MOTOO;TAKASAGO MASAHIRO
分类号
G11B7/085
主分类号
G11B7/085
代理机构
代理人
主权项
地址
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