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发明名称
Multisyklus-sirkulasjonsr÷r
摘要
申请公布号
NO985639(A)
申请公布日期
1998.12.03
申请号
NO19980005639
申请日期
1998.12.03
申请人
RED BARON (OIL TOOLS RENTAL) LTD, THE
发明人
MCGARIAN, BRUCE;BARR, LAWRENCE ROBERT
分类号
E21B21/10;E21B23/00;(IPC1-7):E21B21/10
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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