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发明名称
Plunger lift device
摘要
申请公布号
US2642002(A)
申请公布日期
1953.06.16
申请号
US19490083850
申请日期
1949.03.28
申请人
THE NATIONAL SUPPLY COMPANY
发明人
KNOX DONALD G.;JR. JAMES W. LAWRENCE,
分类号
F04B47/12
主分类号
F04B47/12
代理机构
代理人
主权项
地址
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