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经营范围
发明名称
MAGNETIC RECORDING MEDIUM
摘要
申请公布号
JPH02306423(A)
申请公布日期
1990.12.19
申请号
JP19890125834
申请日期
1989.05.19
申请人
SEIKO EPSON CORP
发明人
AOYAMA AKIRA
分类号
G11B5/66;G11B5/64;G11B5/706;G11B5/73;G11B5/738
主分类号
G11B5/66
代理机构
代理人
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