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经营范围
发明名称
MAGNETIC FILM
摘要
申请公布号
JPH0423412(A)
申请公布日期
1992.01.27
申请号
JP19900128674
申请日期
1990.05.18
申请人
RICOH CO LTD
发明人
KATSURAGAWA TADAO
分类号
G11B11/10;G11B11/105;H01F10/12
主分类号
G11B11/10
代理机构
代理人
主权项
地址
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