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发明名称
摘要
申请公布号
JPH04120821(U)
申请公布日期
1992.10.28
申请号
JP19910035195U
申请日期
1991.04.17
申请人
发明人
分类号
E04D1/30;E04D1/34;(IPC1-7):E04D1/30
主分类号
E04D1/30
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