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发明名称
摘要
申请公布号
JPS4719111(U)
申请公布日期
1972.11.02
申请号
JP19710024730U
申请日期
1971.04.02
申请人
发明人
分类号
E04C2/34;E04B1/88;E04C2/26;(IPC1-7):E04B1/88
主分类号
E04C2/34
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