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发明名称
摘要
申请公布号
JPS5961332(U)
申请公布日期
1984.04.21
申请号
JP19820153452U
申请日期
1982.10.08
申请人
发明人
分类号
E03F3/04;E02B11/00;F16L41/02;(IPC1-7):E02B11/00
主分类号
E03F3/04
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