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发明名称
摘要
申请公布号
JPS5257220(Y2)
申请公布日期
1977.12.24
申请号
JP19740135410U
申请日期
1974.11.07
申请人
发明人
分类号
D02J13/00;C01F7/02;D01F9/32;(IPC1-7):D02J13/00
主分类号
D02J13/00
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