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发明名称
BROENNPERFORERINGSANORDNING.
摘要
申请公布号
NO164558(B)
申请公布日期
1990.07.09
申请号
NO19850000909
申请日期
1985.03.07
申请人
HALLIBURTON COMPANY
发明人
COLLE, EDWARD ARTHUR JR.
分类号
E21B43/116;E21B43/1185;F42D1/04;(IPC1-7):E21B43/118;F42C19/08
主分类号
E21B43/116
代理机构
代理人
主权项
地址
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