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发明名称
摘要
申请公布号
JPH0472131(U)
申请公布日期
1992.06.25
申请号
JP19900115826U
申请日期
1990.11.01
申请人
发明人
分类号
E04F21/00;(IPC1-7):E04F21/00
主分类号
E04F21/00
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代理人
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地址
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