| 发明名称 |
Multiple point groundwater sampler |
| 摘要 |
A multiple point groundwater sampler in which a rotatable inner cylinder has perforations which selectively align with the perforations of an outer cylinder to provide for sampling at individual horizons within a well casing, and means to withdraw the sample from the inner cylinder.
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| 申请公布号 |
US4538683(A) |
申请公布日期 |
1985.09.03 |
| 申请号 |
US19840590615 |
申请日期 |
1984.03.19 |
| 申请人 |
THE BABCOCK & WILCOX COMPANY |
发明人 |
CHULICK, EUGENE T. |
| 分类号 |
E21B33/124;E21B49/08;(IPC1-7):E21B49/08 |
主分类号 |
E21B33/124 |
| 代理机构 |
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| 地址 |
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