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 Berit Fries, Bror FriesfiledCriticalBerit Fries
Priority to NO883821ApriorityCriticalpatent/NO168786C/en
Publication of NO883821D0publicationCriticalpatent/NO883821D0/en
Publication of NO883821LpublicationCriticalpatent/NO883821L/en
Publication of NO168786BpublicationCriticalpatent/NO168786B/en
Publication of NO168786CpublicationCriticalpatent/NO168786C/en