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发明名称
Purpose made temporary cover for filling the aperture in precast concrete cover slabs on manholes which are left part constructed for any length of time
摘要
申请公布号
GB9922396(D0)
申请公布日期
1999.11.24
申请号
GB19990022396
申请日期
1999.09.23
申请人
MCLOUGHLIN, T
发明人
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