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发明名称
LIQUID LEVEL DETECTION
摘要
申请公布号
US5094102(A)
申请公布日期
1992.03.10
申请号
US19900588634
申请日期
1990.09.26
申请人
PHILLIPS PETROLEUM COMPANY
发明人
FRYER, CLAYTON D.;STIE, KENNETH E.;WEDEL, MICHAEL W.;STAMPER, KENNETH R.
分类号
E21B47/04;G01F23/16
主分类号
E21B47/04
代理机构
代理人
主权项
地址
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