发明名称 Liquid sampler
摘要 A device for sampling liquid and semi-liquid materials which comprises a container with a top and end cap, the container being filled through an opening in the top cat which is closed by a valve manually or electrically operated by the user. After filling, the container may be capped with permanent caps for transportation, or the container may be emptied into another container through the end cap which is fitted with a spring biased valve allowing discharge of the contents.
申请公布号 US4949582(A) 申请公布日期 1990.08.21
申请号 US19890319541 申请日期 1989.03.06
申请人 VOLLWEILER, ARTHUR R. 发明人 VOLLWEILER, ARTHUR R.
分类号 E21B49/08;G01N1/12 主分类号 E21B49/08
代理机构 代理人
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