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发明名称
RETRIEVABLE PILOT OPERATED GAS LIFT VALVE
摘要
申请公布号
CA700004(A)
申请公布日期
1964.12.15
申请号
CAD700004
申请日期
申请人
CAMCO
发明人
CHARLES B. CHITWOOD
分类号
主分类号
代理机构
代理人
主权项
地址
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