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发明名称
摘要
申请公布号
JPS53112914(U)
申请公布日期
1978.09.08
申请号
JP19770017416U
申请日期
1977.02.16
申请人
发明人
分类号
E04G21/12;E04C5/18;(IPC1-7):E04C5/18
主分类号
E04G21/12
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代理人
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