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发明名称
METHODS OF PRODUCING GAMMA FERRIC HYDROXYOXIDE POWDER
摘要
申请公布号
GB2085860(A)
申请公布日期
1982.05.06
申请号
GB19810031904
申请日期
1981.10.22
申请人
SONY CORP
发明人
分类号
C01G49/02;C01G49/06;G11B5/706;H01F1/11;(IPC1-7):C01G49/02
主分类号
C01G49/02
代理机构
代理人
主权项
地址
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