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发明名称
Optical head device
摘要
申请公布号
EP0881634(B1)
申请公布日期
2006.04.26
申请号
EP19980109773
申请日期
1998.05.28
申请人
NEC CORPORATION
发明人
RYUICHI, KATAYAMA
分类号
G11B7/135;G11B7/00;G11B7/12;G11B7/125;G11B7/20
主分类号
G11B7/135
代理机构
代理人
主权项
地址
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