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发明名称
Pressure compensating device of gas lifter
摘要
申请公布号
KR100482683(B1)
申请公布日期
2005.04.14
申请号
KR20020069727
申请日期
2002.11.11
申请人
发明人
分类号
F16F9/02;(IPC1-7):F16F9/02
主分类号
F16F9/02
代理机构
代理人
主权项
地址
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