Procédé et dispositif pour détecter le point de coincement des tiges dans un sondage.,申请号OA19810057578-传众专利搜索

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发明名称	Procédé et dispositif pour détecter le point de coincement des tiges dans un sondage.
摘要
申请公布号	OA6977(A)	申请公布日期	1983.07.31
申请号	OA19810057578	申请日期	1981.12.31
申请人	SCHLUMBERGER LTD	发明人
分类号	G01B21/20;E21B47/09;(IPC1-7):E21B47/09	主分类号	G01B21/20
代理机构		代理人
主权项
地址

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