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发明名称
摘要
申请公布号
JPS5647309(Y2)
申请公布日期
1981.11.05
申请号
JP19780063369U
申请日期
1978.05.11
申请人
发明人
分类号
E04D13/068;(IPC1-7):E04D13/06
主分类号
E04D13/068
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