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摘要
申请公布号
JPH0399094(U)
申请公布日期
1991.10.16
申请号
JP19900004877U
申请日期
1990.01.22
申请人
发明人
分类号
E21D9/06;(IPC1-7):E21D9/06
主分类号
E21D9/06
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