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发明名称
摘要
申请公布号
JPS5222824(Y2)
申请公布日期
1977.05.25
申请号
JP19720018740U
申请日期
1972.02.15
申请人
发明人
分类号
E04C2/38;(IPC1-7):E04C2/38
主分类号
E04C2/38
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