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发明名称
Height-adjustment spacer for manhole cover
摘要
申请公布号
GB2218446(A)
申请公布日期
1989.11.15
申请号
GB19890009511
申请日期
1989.04.26
申请人
TAGE * SKOENVALL
发明人
TAGE * SKOENVALL
分类号
E02D29/12;E02D29/14
主分类号
E02D29/12
代理机构
代理人
主权项
地址
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