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发明名称
摘要
申请公布号
JPH01102293(U)
申请公布日期
1989.07.10
申请号
JP19870194941U
申请日期
1987.12.24
申请人
发明人
分类号
E21D11/10;B25J3/00;E04F21/16;(IPC1-7):E21D11/10
主分类号
E21D11/10
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