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发明名称
摘要
申请公布号
DE2163241(A1)
申请公布日期
1972.07.20
申请号
DE19712163241
申请日期
1971.12.20
申请人
发明人
分类号
B01D39/20;B22C1/22;C04B20/10;C04B26/02;C04B26/14;C04B38/00;(IPC1-7):C04B31/44
主分类号
B01D39/20
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代理人
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