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发明名称
DIRECTIONAL ROD PUSHER
摘要
申请公布号
CA2012933(A1)
申请公布日期
1990.10.06
申请号
CA19902012933
申请日期
1990.03.23
申请人
CHARLES MACHINE WORKS, INC. (THE)
发明人
MALZAHN, G. EDWIN
分类号
E21B7/06;E21B7/20;E21B7/26;E21B19/086;H02G1/06
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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