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发明名称
Intermitting system for flowing wells
摘要
申请公布号
US2312455(A)
申请公布日期
1943.03.02
申请号
US19400355274
申请日期
1940.09.03
申请人
TRAWICK LYNN M
发明人
TRAWICK LYNN M.
分类号
F04F1/18
主分类号
F04F1/18
代理机构
代理人
主权项
地址
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