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发明名称
Oil well flowmeter
摘要
申请公布号
US2649710(A)
申请公布日期
1953.08.25
申请号
US19480065017
申请日期
1948.12.13
申请人
DALE CLARENCE R
发明人
DALE CLARENCE R.
分类号
E21B47/10;G01F1/10
主分类号
E21B47/10
代理机构
代理人
主权项
地址
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