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发明名称
摘要
申请公布号
JPH0456818(U)
申请公布日期
1992.05.15
申请号
JP19900100320U
申请日期
1990.09.25
申请人
发明人
分类号
E04D1/30;(IPC1-7):E04D1/30
主分类号
E04D1/30
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