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发明名称
EINRICHTUNG ZUM REGELN DER PUMPE BEI EINER BOHRLOCHANLAGE
摘要
申请公布号
DE2426349(A1)
申请公布日期
1974.12.19
申请号
DE19742426349
申请日期
1974.05.30
申请人
DRESSER INDUSTRIES,INC.
发明人
LYNN DOUGLAS,BOBBY
分类号
E21B37/06;E21B47/00;F04B49/02;(IPC1-7):21B43/12;04B1/08
主分类号
E21B37/06
代理机构
代理人
主权项
地址
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