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发明名称
ZWEISTUFIGER BOHRLOCHPACKER
摘要
申请公布号
DE60118227(D1)
申请公布日期
2006.05.11
申请号
DE20016018227
申请日期
2001.10.18
申请人
WEATHERFORD/LAMB, INC.
发明人
FREIHEIT, R;WILKIN, F
分类号
E21B33/128;E21B33/12
主分类号
E21B33/128
代理机构
代理人
主权项
地址
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