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申请公布号
JP3050654(U)
申请公布日期
1998.07.31
申请号
JP19970009225U
申请日期
1997.10.02
申请人
发明人
分类号
E01C7/00;E01C13/00;E01C13/06;E03B7/10;F16K17/38;F16K31/70;(IPC1-7):E01C13/00
主分类号
E01C7/00
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