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发明名称
摘要
申请公布号
JPH069113(Y2)
申请公布日期
1994.03.09
申请号
JP19880136437U
申请日期
1988.10.19
申请人
发明人
分类号
E02D31/04;E02D29/073;E21D11/04;F16L27/10;(IPC1-7):E21D10/14
主分类号
E02D31/04
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