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经营范围
发明名称
Retrievable Bridge Plug and a Running Tool Therefor
摘要
申请公布号
CA2107210(A1)
申请公布日期
1992.10.07
申请号
CA19922107210
申请日期
1992.04.03
申请人
ZWART, KLAAS J.
发明人
ZWART, KLAAS J.
分类号
E21B33/134;E21B17/02;E21B23/06;E21B33/04;E21B33/129
主分类号
E21B33/134
代理机构
代理人
主权项
地址
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