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发明名称
摘要
申请公布号
DE2103338(A1)
申请公布日期
1972.08.03
申请号
DE19712103338
申请日期
1971.01.26
申请人
BAYER
发明人
分类号
C01B7/19;C01B33/10;(IPC1-7):C01B7/22
主分类号
C01B7/19
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