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发明名称
PERFORERINGSAPPARAT.
摘要
申请公布号
NO812604(A)
申请公布日期
1982.02.15
申请号
NO19810002604
申请日期
1981.07.30
申请人
SCHLUMBERGER LTD,
发明人
POTTIER, ALAIN,;CHESNEL, PIERRE,;CHAINTREAU, BERNARD,
分类号
E21B43/116;E21B43/117;(IPC1-7):E21B/
主分类号
E21B43/116
代理机构
代理人
主权项
地址
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