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.)
Filing date
Publication date
Priority claimed from US06/522,937external-prioritypatent/US4499322A/en
Priority claimed from US06/522,936external-prioritypatent/US4495374A/en
Priority claimed from US06/600,654external-prioritypatent/US4547611A/en
Application filed by Atlantic Richfield CofiledCriticalAtlantic Richfield Co
Publication of NO851460LpublicationCriticalpatent/NO851460L/en
Publication of NO168098BpublicationCriticalpatent/NO168098B/en
Publication of NO168098CpublicationCriticalpatent/NO168098C/en