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
Application filed by Eivind SiemfiledCriticalEivind Siem
Priority to NO891454ApriorityCriticalpatent/NO891454D0/en
Publication of NO891454D0publicationCriticalpatent/NO891454D0/en