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发明名称
摘要
申请公布号
JPH02150315(U)
申请公布日期
1990.12.26
申请号
JP19890061423U
申请日期
1989.05.25
申请人
发明人
分类号
E04D1/34;E04D12/00;(IPC1-7):E04D1/34
主分类号
E04D1/34
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