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发明名称
摘要
申请公布号
JPS5673703(U)
申请公布日期
1981.06.17
申请号
JP19790154990U
申请日期
1979.11.07
申请人
发明人
分类号
E01C9/04;E01C9/06;(IPC1-7):E01C9/04
主分类号
E01C9/04
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代理人
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