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Publication date
Priority claimed from SE3642/69Aexternal-prioritypatent/SE346252B/xx
Priority claimed from NO740/70Aexternal-prioritypatent/NO138363C/no
Application filed by Hasselstroem Claes ErikfiledCriticalHasselstroem Claes Erik
Priority to NO266173ApriorityCriticalpatent/NO134828C/no
Publication of NO134828BpublicationCriticalpatent/NO134828B/no
Publication of NO134828CpublicationCriticalpatent/NO134828C/no