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发明名称
摘要
申请公布号
FR2162077(A1)
申请公布日期
1973.07.13
申请号
FR19720042458
申请日期
1972.11.29
申请人
KNAPSACK AG
发明人
分类号
C01B21/082;C01B21/092;(IPC1-7):C01B21/00
主分类号
C01B21/082
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