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发明名称
STYREINNRETNING FOR EN BOREBROENNSTROEM.
摘要
申请公布号
NO843901(A)
申请公布日期
1985.06.28
申请号
NO19840003901
申请日期
1984.09.28
申请人
CAMCO INC,
发明人
PRINGLE, RONALD EARL,
分类号
E21B34/06;E21B34/14;(IPC1-7):E21B/
主分类号
E21B34/06
代理机构
代理人
主权项
地址
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