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发明名称
Sementeringsverktoy
摘要
申请公布号
NO311050(B1)
申请公布日期
2001.10.01
申请号
NO19950003299
申请日期
1995.08.22
申请人
WEATHERFORD/LAMB INC
发明人
BLIZZARD JR., WILLIAM A.;TILTON, FREDERICK THOMAS
分类号
E21B33/127;E21B33/14;E21B34/06;E21B34/14;(IPC1-7):E21B33/14
主分类号
E21B33/127
代理机构
代理人
主权项
地址
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