Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from NO2389/72Aexternal-prioritypatent/NO135253C/no
Publication of NO751403LpublicationCriticalpatent/NO751403L/no
Application filed by Continental Oil CofiledCriticalContinental Oil Co
Publication of NO135872BpublicationCriticalpatent/NO135872B/no
Publication of NO135872CpublicationCriticalpatent/NO135872C/no