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Priority claimed from US00080424Aexternal-prioritypatent/US3853753A/en
Priority claimed from NO368971Aexternal-prioritypatent/NO132531C/no
Publication of NO751172LpublicationCriticalpatent/NO751172L/no
Application filed by Amoco Prod CofiledCriticalAmoco Prod Co
Publication of NO136355BpublicationCriticalpatent/NO136355B/no
Publication of NO136355CpublicationCriticalpatent/NO136355C/en