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经营范围
发明名称
OPTICAL DISK
摘要
申请公布号
JPH0485897(A)
申请公布日期
1992.03.18
申请号
JP19900198899
申请日期
1990.07.26
申请人
NEC CORP
发明人
OGUMA TADASHI
分类号
H05K7/20;G11B19/04;G11B19/10
主分类号
H05K7/20
代理机构
代理人
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地址
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