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 FR7931842Aexternal-prioritypatent/FR2472631B2/fr
Priority claimed from NO80803843Aexternal-prioritypatent/NO151331C/no
Publication of NO822760LpublicationCriticalpatent/NO822760L/no
Application filed by Gen Develop Operation RichessefiledCriticalGen Develop Operation Richesse
Priority to NO822760ApriorityCriticalpatent/NO157428C/no
Publication of NO157428BpublicationCriticalpatent/NO157428B/no
Publication of NO157428CpublicationCriticalpatent/NO157428C/no