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经营范围
发明名称
PRODUCTION OF OPTICAL DISK SUBSTRATE
摘要
申请公布号
JPH0218731(A)
申请公布日期
1990.01.23
申请号
JP19880166709
申请日期
1988.07.06
申请人
HITACHI LTD
发明人
ITO SHO
分类号
G11B7/26
主分类号
G11B7/26
代理机构
代理人
主权项
地址
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