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 Hellbergs Ind AbfiledCriticalHellbergs Ind Ab
Priority to NO751995ApriorityCriticalpatent/NO140240C/no
Publication of NO751995LpublicationCriticalpatent/NO751995L/no
Publication of NO140240BpublicationCriticalpatent/NO140240B/no
Publication of NO140240CpublicationCriticalpatent/NO140240C/no