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经营范围
发明名称
Insulating tubular well conduits
摘要
申请公布号
GB2099049(A)
申请公布日期
1982.12.01
申请号
GB19820014328
申请日期
1982.05.17
申请人
BAKER INTERNATIONAL CORP
发明人
分类号
E21B17/00;E21B36/00;F16L59/15;(IPC1-7):E21B43/24
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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