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发明名称
摘要
申请公布号
JPS56121815(U)
申请公布日期
1981.09.17
申请号
JP19800019956U
申请日期
1980.02.18
申请人
发明人
分类号
E04D13/08;(IPC1-7):E04D13/08
主分类号
E04D13/08
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代理人
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