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经营范围
发明名称
OPTICAL PICK-UP APPARATUS
摘要
申请公布号
EP0270874(A3)
申请公布日期
1989.02.01
申请号
EP19870116814
申请日期
1987.11.13
申请人
SONY CORPORATION
发明人
YOSHIMATSU, HIROSHI
分类号
G11B7/08;G11B7/135;G11B11/10;G11B11/105;(IPC1-7):G11B7/12;G11B13/04
主分类号
G11B7/08
代理机构
代理人
主权项
地址
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