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发明名称
Brönndukanordning og fremgangsmåte for fastgjöring av en brönnduk på en perforert, rörformet dor
摘要
申请公布号
NO310040(B1)
申请公布日期
2001.05.07
申请号
NO19950004847
申请日期
1995.11.29
申请人
WEATHERFORD/LAMB INC
发明人
GRAEN, LAWRENCE J.
分类号
E21B43/08;(IPC1-7):E21B43/08
主分类号
E21B43/08
代理机构
代理人
主权项
地址
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