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发明名称
摘要
申请公布号
JPS6313831(Y2)
申请公布日期
1988.04.19
申请号
JP19810066686U
申请日期
1981.05.11
申请人
发明人
分类号
C02F1/28;C02F1/50;(IPC1-7):C02F1/28
主分类号
C02F1/28
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代理人
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