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经营范围
发明名称
GRIPESPYD FOR KULER.
摘要
申请公布号
NO912204(D0)
申请公布日期
1991.06.07
申请号
NO19910002204
申请日期
1991.06.07
申请人
TRI-STATE OIL TOOL (UK)
发明人
DOIG, THOMAS;MURRAY, KENNETH ALEXANDER
分类号
E21B31/20;(IPC1-7):E21B/
主分类号
E21B31/20
代理机构
代理人
主权项
地址
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