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发明名称
摘要
申请公布号
JPS4811933(Y1)
申请公布日期
1973.03.31
申请号
JP19680029585U
申请日期
1968.04.12
申请人
发明人
分类号
E04B2/74;E04B2/80;(IPC1-7):E04B2/80
主分类号
E04B2/74
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代理人
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