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发明名称
Pump
摘要
申请公布号
US1860279(A)
申请公布日期
1932.05.24
申请号
US19310538850
申请日期
1931.05.20
申请人
FAWCETT ARTHUR L
发明人
FAWCETT ARTHUR L.
分类号
E21B43/12;F04B47/02
主分类号
E21B43/12
代理机构
代理人
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地址
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