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经营范围
发明名称
FINE FERROMAGNETIC POWDER FOR MAGNETIC RECORDING.
摘要
申请公布号
EP0310682(B1)
申请公布日期
1994.03.02
申请号
EP19880903389
申请日期
1988.04.21
申请人
ISHIHARA SANGYO KAISHA LTD.
发明人
NAKATA, KAZUO CHUO KENKYUSHO;HIRAI, MASAHARU CHUO KENKYUSHO;TAKUMI, NOBUSUKE CHUO KENKYUSHO;KATO, SABURO CHUO KENKYUSHO
分类号
G11B5/706;(IPC1-7):H01F1/11;C01G49/00
主分类号
G11B5/706
代理机构
代理人
主权项
地址
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