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发明名称
摘要
申请公布号
JPH0256231(U)
申请公布日期
1990.04.24
申请号
JP19880134573U
申请日期
1988.10.15
申请人
发明人
分类号
E04D13/072;(IPC1-7):E04D13/06
主分类号
E04D13/072
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