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发明名称
MANHOLE COVER
摘要
申请公布号
GB8417896(D0)
申请公布日期
1984.08.15
申请号
GB19840017896
申请日期
1984.07.13
申请人
TURNER BROS (KINGSWOOD) LTD
发明人
分类号
E02D29/12;E02D29/14
主分类号
E02D29/12
代理机构
代理人
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