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经营范围
发明名称
DRIVE DEVICE FOR OPTICAL DISK
摘要
申请公布号
JPH03178077(A)
申请公布日期
1991.08.02
申请号
JP19890316970
申请日期
1989.12.06
申请人
RICOH CO LTD
发明人
MIZUTA OSAMU
分类号
G11B7/00;G11B7/004;G11B19/20
主分类号
G11B7/00
代理机构
代理人
主权项
地址
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