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Publication date
Priority claimed from FR8212253Aexternal-prioritypatent/FR2530346B1/fr
Priority claimed from FR8212252Aexternal-prioritypatent/FR2530345B1/fr
Priority claimed from NO832498Aexternal-prioritypatent/NO163876C/no
Publication of NO891648LpublicationCriticalpatent/NO891648L/no
Application filed by Schlumberger LtdfiledCriticalSchlumberger Ltd
Priority to NO891648ApriorityCriticalpatent/NO164366C/no
Publication of NO891648D0publicationCriticalpatent/NO891648D0/no
Publication of NO164366BpublicationCriticalpatent/NO164366B/no
Publication of NO164366CpublicationCriticalpatent/NO164366C/no