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发明名称
Fluid density and level recorder
摘要
申请公布号
US2722123(A)
申请公布日期
1955.11.01
申请号
US19540462807
申请日期
1954.10.18
申请人
PHILLIPS PETROLEUM COMPANY
发明人
KANGAS CHARLES H.
分类号
E21B21/08;G01N9/26
主分类号
E21B21/08
代理机构
代理人
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地址
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