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发明名称
Well pump
摘要
申请公布号
US2404930(A)
申请公布日期
1946.07.30
申请号
US19450611743
申请日期
1945.08.21
申请人
SMITH WILSON T
发明人
SMITH WILSON T.
分类号
F04B47/04
主分类号
F04B47/04
代理机构
代理人
主权项
地址
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