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经营范围
发明名称
MANHOLE COVERS
摘要
申请公布号
GB1482313(A)
申请公布日期
1977.08.10
申请号
GB19750026506
申请日期
1975.06.23
申请人
PONT A MOUSSON SA
发明人
分类号
E02D29/14;(IPC1-7):E02D29/14
主分类号
E02D29/14
代理机构
代理人
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