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发明名称
OPTICAL SPOT OBSERVATION DEVICE FOR MASTER DISK EXPOSURE DEVICE OF OPTICAL DISK
摘要
申请公布号
JPH11176027(A)
申请公布日期
1999.07.02
申请号
JP19970361783
申请日期
1997.12.10
申请人
RICOH CO LTD
发明人
MIYATA HIROYUKI
分类号
G11B7/09;G11B7/26;(IPC1-7):G11B7/26
主分类号
G11B7/09
代理机构
代理人
主权项
地址
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