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 NO870904Aexternal-prioritypatent/NO163972C/no
Application filed by Norwegian ContractorsfiledCriticalNorwegian Contractors
Priority to NO88884934ApriorityCriticalpatent/NO884934L/no
Publication of NO884934D0publicationCriticalpatent/NO884934D0/no
Publication of NO884934LpublicationCriticalpatent/NO884934L/no