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发明名称
Automatic sampler
摘要
申请公布号
US2272313(A)
申请公布日期
1942.02.10
申请号
US19390250171
申请日期
1939.01.10
申请人
MERCO NORDSTROM VALVE COMPANY
发明人
WATERS RUSSELL M.
分类号
E21B49/08
主分类号
E21B49/08
代理机构
代理人
主权项
地址
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