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Filing date
Publication date
Priority claimed from US05/911,016external-prioritypatent/US4255798A/en
Priority claimed from NO782193Aexternal-prioritypatent/NO157197C/en
Publication of NO823351LpublicationCriticalpatent/NO823351L/en
Application filed by Schlumberger LtdfiledCriticalSchlumberger Ltd
Priority to NO823351ApriorityCriticalpatent/NO166016C/en
Publication of NO166016BpublicationCriticalpatent/NO166016B/en
Publication of NO166016CpublicationCriticalpatent/NO166016C/en