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发明名称
摘要
申请公布号
FR2328677(B1)
申请公布日期
1979.05.04
申请号
FR19750032651
申请日期
1975.10.24
申请人
THOMSON CSF
发明人
分类号
C01G49/00;C04B35/26;H01F1/34;(IPC1-7):C04B35/26;H01F1/10
主分类号
C01G49/00
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