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发明名称
摘要
申请公布号
FR2375891(B1)
申请公布日期
1980.12.26
申请号
FR19760039578
申请日期
1976.12.30
申请人
NGK INSULATORS LTD
发明人
分类号
B01D25/12;B01D25/127;B01D35/20;(IPC1-7):B01D25/12
主分类号
B01D25/12
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