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发明名称
摘要
申请公布号
JPS63198720(U)
申请公布日期
1988.12.21
申请号
JP19870090900U
申请日期
1987.06.12
申请人
发明人
分类号
E04D13/16;E04B7/06;E04D3/36;(IPC1-7):E04B7/06
主分类号
E04D13/16
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