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发明名称
DOWNHOLE ROLLER VANE MOTOR AND ROLLER VANE PUMP
摘要
申请公布号
IL135643(D0)
申请公布日期
2001.05.20
申请号
IL19980135643
申请日期
1998.10.19
申请人
ARNOLD WILLEM JOSEPHUS GRUPPING
发明人
分类号
E21B4/02;F04C2/344;F04C11/00;(IPC1-7):F04C
主分类号
E21B4/02
代理机构
代理人
主权项
地址
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