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经营范围
发明名称
OPTICAL PICKUP
摘要
申请公布号
JPH0757273(A)
申请公布日期
1995.03.03
申请号
JP19930222844
申请日期
1993.08.16
申请人
RICOH CO LTD
发明人
OKAMOTO AKIHIKO
分类号
G11B7/08;(IPC1-7):G11B7/08
主分类号
G11B7/08
代理机构
代理人
主权项
地址
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