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发明名称
Well pumping device
摘要
申请公布号
US2076615(A)
申请公布日期
1937.04.13
申请号
US19360097663
申请日期
1936.08.24
申请人
ALBERT BULLOCK
发明人
BULLOCK ALBERT
分类号
F04B9/04
主分类号
F04B9/04
代理机构
代理人
主权项
地址
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