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发明名称
摘要
申请公布号
JPH0379894(U)
申请公布日期
1991.08.15
申请号
JP19890141519U
申请日期
1989.12.07
申请人
发明人
分类号
C02F1/28;C02F1/50;C02F1/66;C02F1/68;(IPC1-7):C02F1/68
主分类号
C02F1/28
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