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经营范围
发明名称
AN OPTICAL PICKUP APPARATUS
摘要
申请公布号
EP0348221(A3)
申请公布日期
1991.05.15
申请号
EP19890306387
申请日期
1989.06.23
申请人
SHARP KABUSHIKI KAISHA
发明人
NAGAHAMA, TOSHIYA;YOSHIDA, YOSHIO;KURATA, YUKIO
分类号
G11B7/09;G11B7/13;G11B7/135;(IPC1-7):G11B7/135
主分类号
G11B7/09
代理机构
代理人
主权项
地址
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