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发明名称
摘要
申请公布号
JPS51153569(U)
申请公布日期
1976.12.07
申请号
JP19750074092U
申请日期
1975.05.31
申请人
发明人
分类号
C02F1/40;E02B15/00;E02B15/10;(IPC1-7):E02B15/00
主分类号
C02F1/40
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代理人
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