发明名称 Pump rod assembly
摘要 Pump rod assembly which, to protect against the pump rod assembly and tubing touching each other, carries guides, the guides having a main part which is matched to the diameter of the bore and at each of its ends has a sleeve-shaped extension.
申请公布号 DE3130580(A1) 申请公布日期 1982.10.28
申请号 DE19813130580 申请日期 1981.08.01
申请人 WALTER EBENHOEH & SOHN 发明人 EBENHOEH,WALTER
分类号 F04B53/14;(IPC1-7):F04B21/00 主分类号 F04B53/14
代理机构 代理人
主权项
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