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发明名称
摘要
申请公布号
FR2121428(A1)
申请公布日期
1972.08.25
申请号
FR19710000900
申请日期
1971.01.13
申请人
UGINE KUHLMANN
发明人
分类号
C01B15/12;(IPC1-7):C01B15/00
主分类号
C01B15/12
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