Well pipe depth indicator,申请号GB19840008451-传众专利搜索

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发明名称	Well pipe depth indicator
摘要
申请公布号	GB2150694(A)	申请公布日期	1985.07.03
申请号	GB19840008451	申请日期	1984.04.02
申请人	RAYMOND FELIX * MIKOLAJCZYK	发明人	RAYMOND FELIX * MIKOLAJCZYK
分类号	E21B45/00;G01B7/02;G01B7/26;(IPC1-7):G01B7/26	主分类号	E21B45/00
代理机构		代理人
主权项
地址

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