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发明名称
摘要
申请公布号
JPS57202521(U)
申请公布日期
1982.12.23
申请号
JP19810089419U
申请日期
1981.06.19
申请人
发明人
分类号
E04D1/04;E04D1/02;(IPC1-7):E04D1/02
主分类号
E04D1/04
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代理人
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