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发明名称
Borehole sampler
摘要
申请公布号
US2308156(A)
申请公布日期
1943.01.12
申请号
US19400354658
申请日期
1940.08.29
申请人
STANDARD OIL DEVELOPMENT COMPANY
发明人
CRUMP JAMES S.
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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