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发明名称
摘要
申请公布号
JPH0634475(Y2)
申请公布日期
1994.09.07
申请号
JP19880078828U
申请日期
1988.06.16
申请人
发明人
分类号
E21D11/15;E21D11/08;E21D11/14;(IPC1-7):E21D11/08
主分类号
E21D11/15
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代理人
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