Method for determining the position of cement slurry in a well bore,申请号US19370170862-传众专利搜索

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发明名称	Method for determining the position of cement slurry in a well bore
摘要
申请公布号	US2171840(A)	申请公布日期	1939.09.05
申请号	US19370170862	申请日期	1937.10.25
申请人	BAGGAH CORPORATION	发明人	ARMENTROUT ARTHUR L.;GUDIE RAY
分类号	E21B47/04	主分类号	E21B47/04
代理机构		代理人
主权项
地址

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