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发明名称
摘要
申请公布号
JPS60428(U)
申请公布日期
1985.01.05
申请号
JP19830090352U
申请日期
1983.06.13
申请人
发明人
分类号
E02B7/20;E02B7/28;F16K3/00;F16K3/02;(IPC1-7):E02B7/20
主分类号
E02B7/20
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