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发明名称
摘要
申请公布号
JP2548497(Y2)
申请公布日期
1997.09.24
申请号
JP19910013147U
申请日期
1991.02.15
申请人
发明人
分类号
E02F9/22;F15B11/00;F15B11/04;(IPC1-7):F15B11/00
主分类号
E02F9/22
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