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发明名称
摘要
申请公布号
JPS5144110(U)
申请公布日期
1976.04.01
申请号
JP19740116754U
申请日期
1974.09.30
申请人
发明人
分类号
E21D9/08;E02F5/18;E21D9/12;(IPC1-7):E02F5/18
主分类号
E21D9/08
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代理人
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