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发明名称
Method and device for drilling a manhole cover
摘要
申请公布号
EP1182299(A3)
申请公布日期
2002.11.27
申请号
EP20010110929
申请日期
2001.05.05
申请人
STEHR, JUERGEN
发明人
STEHR, JUERGEN
分类号
E01C23/088;E02D29/14;(IPC1-7):E02D29/14;B28D1/18;E01C23/09
主分类号
E01C23/088
代理机构
代理人
主权项
地址
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