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发明名称
WELL TOOL
摘要
申请公布号
EP0086101(A3)
申请公布日期
1984.08.01
申请号
EP19830300589
申请日期
1983.02.04
申请人
DAILEY OIL TOOL INC;DAILEY PETROLEUM SERVICES CORP
发明人
TENG, CHUAN CHIN
分类号
E21B12/02;E21B17/07;(IPC1-7):E21B17/07
主分类号
E21B12/02
代理机构
代理人
主权项
地址
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