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发明名称
摘要
申请公布号
JPH03128117(U)
申请公布日期
1991.12.24
申请号
JP19900011732U
申请日期
1990.02.08
申请人
发明人
分类号
E04D3/40;E04D1/30;(IPC1-7):E04D3/40
主分类号
E04D3/40
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代理人
主权项
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