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 NO2788/73Aexternal-prioritypatent/NO131162C/no
Application filed by Alfred GrubstadfiledCriticalAlfred Grubstad
Priority to NO476673ApriorityCriticalpatent/NO133062C/no
Publication of NO476673LpublicationCriticalpatent/NO476673L/no
Publication of NO133062BpublicationCriticalpatent/NO133062B/no
Publication of NO133062CpublicationCriticalpatent/NO133062C/no