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发明名称
REVETMENT BLOCK
摘要
申请公布号
EP1042561(A1)
申请公布日期
2000.10.11
申请号
EP19990955157
申请日期
1999.10.21
申请人
PETRATECH, INC.
发明人
KNIGHT, DAVID
分类号
E02B3/14;(IPC1-7):E02B3/12;E01C5/00
主分类号
E02B3/14
代理机构
代理人
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地址
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