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发明名称
摘要
申请公布号
JPS55177849(U)
申请公布日期
1980.12.20
申请号
JP19790078009U
申请日期
1979.06.08
申请人
发明人
分类号
C02F11/12;B04C5/22;C02F11/00;(IPC1-7):B04C5/22
主分类号
C02F11/12
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