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发明名称
摘要
申请公布号
SU431889(A1)
申请公布日期
1974.06.15
申请号
SU19721801455
申请日期
1972.06.16
申请人
发明人
分类号
B01D21/01;G05D27/00;(IPC1-7):B01D21/01
主分类号
B01D21/01
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代理人
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