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发明名称
摘要
申请公布号
JPH0531349(Y2)
申请公布日期
1993.08.11
申请号
JP19880122999U
申请日期
1988.09.19
申请人
发明人
分类号
E02D3/12;F16L13/10;(IPC1-7):F16L13/10
主分类号
E02D3/12
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