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发明名称
WELL TOOL
摘要
申请公布号
GB1590453(A)
申请公布日期
1981.06.03
申请号
GB19770017289
申请日期
1977.04.26
申请人
INTERNATIONAL ENTERPRISES INC
发明人
分类号
B23D21/14;B23D21/00;E02D9/00;E21B23/00;E21B29/00;E21B31/16;E21B31/20;(IPC1-7):E21B31/20
主分类号
B23D21/14
代理机构
代理人
主权项
地址
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