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经营范围
发明名称
Gas lift apparatus
摘要
申请公布号
US2210247(A)
申请公布日期
1940.08.06
申请号
US19370174312
申请日期
1937.11.13
申请人
THOMAS E. BRYAN
发明人
KYNER ROBERT R.
分类号
E21B43/12
主分类号
E21B43/12
代理机构
代理人
主权项
地址
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