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发明名称
摘要
申请公布号
JPH0212498(U)
申请公布日期
1990.01.25
申请号
JP19880090348U
申请日期
1988.07.07
申请人
发明人
分类号
C02F3/22;C02F1/50;C02F7/00;(IPC1-7):C02F7/00
主分类号
C02F3/22
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代理人
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