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发明名称
摘要
申请公布号
JP2547609(Y2)
申请公布日期
1997.09.10
申请号
JP19910049550U
申请日期
1991.06.03
申请人
发明人
分类号
E02F9/22;F15B13/042;F16K31/44;(IPC1-7):F15B13/042
主分类号
E02F9/22
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代理人
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