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发明名称
摘要
申请公布号
JPH0198836(U)
申请公布日期
1989.07.03
申请号
JP19870195386U
申请日期
1987.12.23
申请人
发明人
分类号
E04D3/40;(IPC1-7):E04D3/40
主分类号
E04D3/40
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