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经营范围
发明名称
OPTICAL PICK-UP DEVICES
摘要
申请公布号
EP0212941(A3)
申请公布日期
1989.01.18
申请号
EP19860306257
申请日期
1986.08.13
申请人
SONY CORPORATION
发明人
OINOUE, HIROSHI PATENTS DIVISION;GODA, YOSHIMASA PATENTS DIVISION
分类号
G02B7/00;G02B26/10;G11B7/09;(IPC1-7):G11B7/08;G11B7/12
主分类号
G02B7/00
代理机构
代理人
主权项
地址
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