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发明名称
摘要
申请公布号
JPS63140425(U)
申请公布日期
1988.09.16
申请号
JP19870032832U
申请日期
1987.03.06
申请人
发明人
分类号
E04D13/08;F16L3/08;(IPC1-7):E04D13/08
主分类号
E04D13/08
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