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发明名称
OBJECTIVE FOR OPTICAL PICKUP
摘要
申请公布号
JPH05127078(A)
申请公布日期
1993.05.25
申请号
JP19910290099
申请日期
1991.11.06
申请人
RICOH CO LTD
发明人
SUHARA HIROYUKI
分类号
G02B1/04;G02B13/00;G02B13/18
主分类号
G02B1/04
代理机构
代理人
主权项
地址
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