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发明名称
Manhole cover keyway plug
摘要
申请公布号
GB2308858(A)
申请公布日期
1997.07.09
申请号
GB19950026736
申请日期
1995.12.30
申请人
RICHARD JAMES VINCENT * FILLINGHAM
发明人
RICHARD JAMES VINCENT * FILLINGHAM
分类号
E02D29/12;(IPC1-7):E02D29/12
主分类号
E02D29/12
代理机构
代理人
主权项
地址
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