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发明名称
Venturi-tube oil well pump
摘要
申请公布号
US2114905(A)
申请公布日期
1938.04.19
申请号
US19360076378
申请日期
1936.04.25
申请人
FREDERICK MCMAHON WILLIAM
发明人
MCMAHON WILLIAM FREDERICK
分类号
F04F5/46
主分类号
F04F5/46
代理机构
代理人
主权项
地址
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