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发明名称
摘要
申请公布号
JPS56171402(U)
申请公布日期
1981.12.18
申请号
JP19800071417U
申请日期
1980.05.23
申请人
发明人
分类号
E02F9/22;E02F9/20;F04B49/00;F15B11/00;(IPC1-7):F15B11/00
主分类号
E02F9/22
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